<SEC-DOCUMENT>0000904454-23-000577.txt : 20231025
<SEC-HEADER>0000904454-23-000577.hdr.sgml : 20231025
<ACCEPTANCE-DATETIME>20231025171812
ACCESSION NUMBER:		0000904454-23-000577
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231025
DATE AS OF CHANGE:		20231025

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASSEMBLY BIOSCIENCES, INC.
		CENTRAL INDEX KEY:			0001426800
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-85836
		FILM NUMBER:		231346848

	BUSINESS ADDRESS:	
		STREET 1:		331 OYSTER POINT BLVD.
		STREET 2:		FOURTH FLOOR
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		(833) 409-4583

	MAIL ADDRESS:	
		STREET 1:		331 OYSTER POINT BLVD.
		STREET 2:		FOURTH FLOOR
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VENTRUS BIOSCIENCES INC
		DATE OF NAME CHANGE:	20080211

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GILEAD SCIENCES, INC.
		CENTRAL INDEX KEY:			0000882095
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				943047598
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		333 LAKESIDE DR
		CITY:			FOSTER CITY
		STATE:			CA
		ZIP:			94404
		BUSINESS PHONE:		6505743000

	MAIL ADDRESS:	
		STREET 1:		333 LAKESIDE DR
		CITY:			FOSTER CITY
		STATE:			CA
		ZIP:			94404

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GILEAD SCIENCES INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>s13d_102523-assemblybio.htm
<DESCRIPTION>SCHEDULE 13D
<TEXT>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SCHEDULE 13D<BR>
Under the Securities Exchange Act of 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(Amendment No. )*</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>ASSEMBLY BIOSCIENCES, INC.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">(Name of Issuer)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Common Stock, par value $0.001</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">(Title of Class of Securities)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>0453961080</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">(CUSIP Number)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Gilead Sciences, Inc.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>333 Lakeside Drive</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Foster City, California 94404</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>650-574-3000</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">(Name, Address and Telephone Number of Person<BR>
Authorized to Receive Notices and Communications)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>October 16, 2023</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-size: 10pt">(Date of Event Which Requires Filing of this Statement)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">If the filing person has previously filed a statement
on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of &sect; 240.13d-1(e),
240.13d-1(f) or 240.13d-1(g), check the following box [ ].</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Note: Schedules filed in paper format shall include
a signed original and five copies of the schedule, including all exhibits. See &sect; 240.13d-7(b) for other parties to whom copies are
to be sent.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">*The remainder of this cover page shall be filled out
for a reporting person&rsquo;s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment
containing information which would alter disclosures provided in a prior cover page.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The information required on the remainder of this cover
page shall not be deemed to be &ldquo;filed&rdquo; for the purpose of Section 18 of the Securities Exchange Act of 1934 (&ldquo;<U>Act</U>&rdquo;)
or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see
the Notes).</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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    <TD STYLE="width: 50%; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 2</FONT></TD></TR>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>1</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">NAME OF REPORTING PERSONS</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">Gilead Sciences, Inc.</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>2</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 3pt 0 0 17.3pt; text-align: justify">(a)&nbsp;&nbsp;[ ]</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 3pt 0 6pt 17.3pt; text-align: justify">(b)&nbsp;&nbsp;[ ]</P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SEC USE ONLY</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SOURCE OF FUNDS (See Instructions)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">WC</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt">[&nbsp;&nbsp;&nbsp;]</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">CITIZENSHIP OR PLACE OF ORGANIZATION</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">Delaware</TD></TR>
  <TR>
    <TD COLSPAN="2" ROWSPAN="8" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-size: 11pt"><FONT STYLE="font-size: 9pt">NUMBER OF<BR>
SHARES<BR>
BENEFICIALLY<BR>
OWNED BY<BR>
EACH<BR>
REPORTING<BR>
PERSON<BR>
WITH</FONT></TD>
    <TD ROWSPAN="2" STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>7</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SOLE VOTING POWER</FONT></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">13,073,668</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD ROWSPAN="2" STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SHARED VOTING POWER</FONT></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">0</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD ROWSPAN="2" STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SOLE DISPOSITIVE POWER</FONT></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">13,073,668</TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD ROWSPAN="2" STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">SHARED DISPOSITIVE POWER</FONT></TD>
    <TD STYLE="font-size: 12pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">0</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font-size: 12pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 10pt; color: #212529; background-color: white">13,073,668</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">[&nbsp;&nbsp;&nbsp;]</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">19.9% (1)</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD ROWSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; font-size: 11pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; padding-top: 2pt; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt">TYPE OF REPORTING PERSON (See Instructions)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="4" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 3pt; padding-bottom: 6pt; text-align: justify; font-size: 11pt">CO</TD></TR>
  <TR>
    <TD STYLE="width: 6%">&nbsp;</TD>
    <TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 9%">&nbsp;</TD>
    <TD STYLE="width: 74%">&nbsp;</TD>
    <TD STYLE="width: 1%">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-size: 10pt">(1)</FONT></TD><TD><FONT STYLE="font-size: 10pt">Based upon 65,709,112 shares of common stock of the Issuer issued and outstanding, which 65,709,112
shares is equal to the sum of (i) 52,635,444 shares of common stock of the Issuer issued and outstanding as of October 13, 2023, as represented
by the Issuer to Gilead Sciences, Inc. in the Common Stock Purchase Agreement, dated October 15, 2023, between the Issuer and Gilead Sciences,
Inc., plus (ii) 13,073,668 shares of common stock issued by the Issuer to Gilead Sciences, Inc. on October 16, 2023 pursuant to the Common
Stock Purchase Agreement, dated October 15, 2023, between the Issuer and Gilead Sciences, Inc..</FONT></TD></TR></TABLE>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 3</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>Item 1. Security and Issuer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">This Schedule 13D (the &ldquo;<U>Schedule 13D</U>&rdquo;)
relates to the common stock, par value $0.001 per share (the &ldquo;<U>Common Stock</U>&rdquo;), of Assembly Biosciences, Inc., a Delaware
corporation (the &ldquo;<U>Issuer</U>&rdquo;). The Issuer&rsquo;s principal executive offices are located at 331 Oyster Point Blvd., Fourth
Floor, South San Francisco, California 94080.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in; text-indent: -0.75in"><FONT STYLE="font-size: 10pt"><B>Item
2.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Identity and Background</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(a) This Schedule 13D is being filed by Gilead Sciences,
Inc., a Delaware corporation (&ldquo;<U>Gilead</U>&rdquo; or the &ldquo;<U>Reporting Person</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(b) The principal business address of the Reporting
Person is 333 Lakeside Drive, Foster City, California 94404.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(c) The principal business of the Reporting Person
is to develop and commercialize innovative medicines in areas of unmet medical need and engage in any other activity or business lawfully
carried on by a corporation organized under the laws of the State of Delaware.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The directors and executive officers of the Reporting
Person are set forth on Schedule I, attached hereto. Schedule I sets forth the following information with respect to each such person:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(i) name;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(ii) business address;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(iii) position with the Reporting Person and present
principal occupation or employment and, for persons not employed by the Reporting Person, the name, principal business and address of
any corporation or other organization in which such employment is conducted; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(iv) citizenship.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(d) &mdash; (e) During the last five years, neither
the Reporting Person nor any person named in Schedule I has been (i)&nbsp;convicted in a criminal proceeding (excluding traffic violations
or similar misdemeanors) or (ii)&nbsp;a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and
as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or
mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(f) The jurisdiction of organization of the Reporting
Person is set forth in subsection (a) above. The citizenship of each of the individuals referred to in Schedule I is set forth on Schedule
I.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-size: 10pt">&nbsp;<B>Item 3.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Source
and Amount of Funds or Other Consideration</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">On October 15, 2023, Gilead entered into the Purchase
Agreement (as defined below), pursuant to which Gilead agreed to purchase an initial 13,073,668 shares of the Issuer&rsquo;s Common Stock
(the &ldquo;<U>Initial Purchase</U>&rdquo;) at a purchase price of $1.16 per share (the &ldquo;<U>Initial Purchase Price</U>&rdquo;),
which purchase occurred on October 16, 2023. The total consideration for the Initial Purchase was $15.2 million, and such consideration
was obtained from the available cash resources of Gilead.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 4</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in; text-indent: -0.75in"><FONT STYLE="font-size: 10pt"><B>Item
4.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Purpose of Transaction</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">On October 15, 2023, Gilead and the Issuer entered
into an Option, License and Collaboration Agreement (the &ldquo;<U>Collaboration Agreement</U>&rdquo;) pursuant to which Gilead (1) exclusively
licensed to the Issuer its helicase primase inhibitor program and non-nucleoside polymerase inhibitor (NNPI) program, while retaining
opt-in rights to these programs and (2) has an option to take an exclusive license, on a program-by-program basis, to all of the Issuer&rsquo;s
other current and future pipeline programs.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">In addition to the Collaboration Agreement, Gilead
and the Issuer entered into a Common Stock Purchase Agreement (the &ldquo;<U>Purchase Agreement</U>&rdquo;) and an Investor Rights Agreement
(the &ldquo;<U>Investor Rights Agreement</U>&rdquo; and, together with the Purchase Agreement, the &ldquo;<U>Equity Agreements</U>&rdquo;),
pursuant to which Gilead made the Initial Purchase. If the Issuer completes an equity financing (or series of financings) by July 15,
2024 that results in at least $30 million of proceeds to the Issuer, then, subject to approval by the Issuer&rsquo;s stockholders, the
Issuer may require Gilead to purchase additional shares of Common Stock from the Issuer in an amount that results in Gilead owning 29.9%
of the Issuer&rsquo;s then-outstanding voting capital stock. If the Issuer does not complete the equity financing or does not provide
notice to Gilead that it is requiring Gilead to purchase such additional shares, Gilead may elect to purchase additional shares of Common
Stock from the Issuer in an amount that results in Gilead owning 29.9% of the Issuer&rsquo;s then-outstanding voting capital stock, subject
to Issuer stockholder approval. The purchase price per share for additional shares purchased by Gilead will be equal to the lesser of
(1) a 35% premium to the 30-day volume weighted average price immediately prior to the date of purchase or (2) a 35% premium to the 30-day
volume weighted average price immediately prior to delivery by Gilead of notice of the anticipated closing date for the additional share
purchase. The Equity Agreements also include standstill and lockup provisions, with customary exceptions, and provide Gilead with certain
other stock purchase rights and registration rights, as well as the right to designate two directors (or, alternatively, board observers,
at Gilead&rsquo;s election) to the Issuer&rsquo;s Board of Directors.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The acquisitions by the Reporting Person of the Issuer&rsquo;s
securities as described herein were effected in connection with entry into the Collaboration Agreement and the Equity Agreements, and
because of the belief that the securities of the Issuer represent an attractive investment. The foregoing description of the Equity Agreements
is not complete and is subject to and qualified in its entirety by reference to the full text of such agreements, which are attached as
Exhibits 99.1 and 99.2 hereto and incorporated herein by reference.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Except as otherwise described herein, the Reporting
Person currently has no plan(s) or proposal(s) that relate to, or would result in, any of the events or transactions described in Item
4(a) through (j) of Schedule 13D, although the Reporting Person reserves the right, at any time and from time to time, to review or reconsider
such position and/or change such purpose and/or formulate plans or proposals with respect thereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The Reporting Person intends to review from time to
time its investment in the Issuer and the Issuer&rsquo;s business affairs, financial position, performance and other investments considerations.
The Reporting Person may from time to time engage in discussions with the Issuer, its directors and officers, other stockholders of the
Issuer and other persons on matters that relate to the management, operations, business, assets, capitalization, financial condition,
strategic plans, governance and the future of the Issuer and/or its subsidiaries. Based upon such review and discussions, as well as general
economic, market and industry conditions and prospectus and the Reporting Person&rsquo;s liquidity requirements and investment considerations,
and subject to the limitations in the agreements described above, the Reporting Person may consider additional courses of action, which
may include, in the future, formulating plans or proposals regarding the Issuer and/or its subsidiaries, including possible future plans
or proposals concerning events or transactions of the kind described in Item 4(a) through (j) of Schedule 13D.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 5</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in; text-indent: -0.75in"><FONT STYLE="font-size: 10pt"><B>Item
5.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Interest in Securities of the Issuer</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(a)-(b)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Number of shares of Common Stock beneficially owned:</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>13,073,668 shares</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Percent of class:</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>19.9%</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The percentage ownership was calculated based upon
65,709,112 shares of common stock of the Issuer issued and outstanding, which 65,709,112 shares is equal to the sum of (i) 52,635,444
shares of common stock of the Issuer issued and outstanding as of October 13, 2023, as represented by the Issuer to Gilead in the Purchase
Agreement, plus (ii) 13,073,668 shares of common stock issued by the Issuer to Gilead on October 16, 2023 pursuant to the Purchase Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Number of shares as to which such person has:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-size: 10pt">(i)</FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt">Sole
power to vote or to direct the vote: </FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>13,073,668 shares</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(ii) Shared power to vote or to direct the vote:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>0 shares</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(iii) Sole power to dispose or to direct the disposition of:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>13,073,668 shares</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(iv) Shared power to dispose or to direct the disposition of:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 31%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10.1pt; text-indent: -10.1pt"><B>Gilead</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD>
    <TD STYLE="width: 69%; border-top: #7F7F7F 1pt solid; border-bottom: #7F7F7F 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>0 shares</B></P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">To the best knowledge of the Reporting Person, none of the individuals
listed on Schedule I beneficially owns any of the Issuer&rsquo;s Common Stock.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 6</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(c) Except as reported in this Schedule 13D, neither
the Reporting Person nor, to the best knowledge of the Reporting Person, any of the individuals listed on Schedule I have effected any
transactions in the Common Stock during the past sixty (60) days.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(d) Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">(e) Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in; text-indent: -0.75in"><FONT STYLE="font-size: 10pt"><B>Item
6.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Contracts, Arrangements, Understandings or Relationship
with Respect to Securities of the Issuer</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">Except as disclosed in Items 3 and 4 of this Schedule
13D, there are no contracts, arrangements, understandings or relationships (legal or otherwise) to which the Reporting Person is a party
with respect to the securities of the Issuer.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 0 0.75in; text-indent: -0.75in"><FONT STYLE="font-size: 10pt"><B>Item
7.</B></FONT><FONT STYLE="font-size: 3pt">&nbsp;</FONT><FONT STYLE="font-size: 10pt"><B>Materials to Be Filed as Exhibits</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Exhibit 99.1</P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Common Stock Purchase Agreement, dated October 15, 2023 between Assembly Biosciences, Inc. and Gilead Sciences, Inc. (incorporated by reference to Exhibit 10.2 of Assembly Biosciences, Inc.&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on October 17, 2023)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Exhibit 99.2</P>
    <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Investor Rights Agreement, dated October 15, 2023 between Assembly Biosciences, Inc. and Gilead Sciences, Inc. (incorporated by reference to Exhibit 10.3 of Assembly Biosciences, Inc.&rsquo;s Current Report on Form 8-K filed with the Securities and Exchange Commission on October 17, 2023)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 7</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SIGNATURE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">After reasonable inquiry and to the best of the undersigned&rsquo;s
knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.25in">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10pt; text-indent: -10pt">Date: October 25, 2023</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD COLSPAN="2" STYLE="font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">GILEAD SCIENCES, INC.<BR>
&nbsp;</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font: 12pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 9%; font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">By:&nbsp;</FONT></TD>
    <TD STYLE="width: 48%; border-bottom: black 1pt solid; font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">/s/ Andrew D. Dickinson</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 10pt; font: 12pt Times New Roman, Times, Serif; text-indent: -10pt">&nbsp;</TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Name: </FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Andrew D. Dickinson</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 10pt; text-indent: -10pt">&nbsp;</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Title:</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Chief Financial Officer</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>


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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">CUSIP No. 0453961080</FONT></TD>
    <TD STYLE="width: 50%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">Page 8</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Schedule I</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">The name and present principal occupation of each of
the executive officers and directors of Gilead Sciences, Inc. are set forth below. Unless otherwise noted, each of these persons have
as their business address c/o Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Times New Roman, Times, Serif">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 24%; border: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 9pt"><B>Name</B></FONT></TD>
    <TD STYLE="width: 25%; border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Title</B></FONT></TD>
    <TD STYLE="width: 15%; border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Citizenship</B></FONT></TD>
    <TD STYLE="width: 36%; border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Principal Occupation and, if&nbsp;&nbsp;not employed by Gilead Sciences, Inc., Name, Principal Business and<BR>
Address of Employer</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Daniel P. O&rsquo;Day</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chief Executive Officer, Chairman and Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">*</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Jacqueline K. Barton, Ph.D.</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Professor Emerita, California Institute of Technology</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Jeffrey A. Bluestone, Ph.D.</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">President and Chief Executive Officer, Sonoma Biotherapeutics; Professor, University of California San Francisco</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Sandra J. Horning, M.D.</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Retired Chief Medical Officer of Roche, Inc.</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Kelly A. Kramer</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Retired Executive Vice President and Chief Financial Officer, Cisco Systems, Inc.</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Kevin E. Lofton, FACHE</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Retired Chief Executive Officer, CommonSpirit Health</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Harish Manwani</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Singapore</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Senior Operating Partner, Blackstone</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Javier J. Rodriguez</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Mexico</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chief Executive Officer, DaVita, Inc.</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Anthony Welters</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chairman and Chief Executive Officer, CINQ Care Inc</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Andrew D. Dickinson</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chief Financial Officer</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">*</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Johanna Mercier</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chief Commercial Officer</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">*</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Merdad V. Parsey, M.D., Ph.D.</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Chief Medical Officer</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">*</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Deborah H. Telman</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">Executive Vice President, Corporate Affairs and General Counsel</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">United States</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-bottom: 6pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 10pt">*</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;<FONT STYLE="font-size: 10pt">* The present principal occupation
for each of these individuals is officer of Gilead Sciences, Inc. and officer, trustee and/or director of other affiliated entities.</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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