<SEC-DOCUMENT>0001144204-16-135390.txt : 20161118
<SEC-HEADER>0001144204-16-135390.hdr.sgml : 20161118
<ACCEPTANCE-DATETIME>20161118162428
ACCESSION NUMBER:		0001144204-16-135390
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20161118
DATE AS OF CHANGE:		20161118

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HUDSON TECHNOLOGIES INC /NY
		CENTRAL INDEX KEY:			0000925528
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-MACHINERY, EQUIPMENT & SUPPLIES [5080]
		IRS NUMBER:				133641539
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-48635
		FILM NUMBER:		162008037

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 1541
		STREET 2:		ONE BLUE HILL PLAZA, 14TH FLOOR
		CITY:			PEARL RIVER
		STATE:			NY
		ZIP:			10965
		BUSINESS PHONE:		8457356000

	MAIL ADDRESS:	
		STREET 1:		PO BOX 1541
		STREET 2:		ONE BLUE HILL PLAZA, 14TH FLOOR
		CITY:			PEARL RIVER
		STATE:			NY
		ZIP:			10965

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	REFRIGERANT RECLAMATION INDUSTRIES INC
		DATE OF NAME CHANGE:	19940617

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ZUGIBE KEVIN J
		CENTRAL INDEX KEY:			0001010543

	FILING VALUES:
		FORM TYPE:		SC 13D/A
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>v453462_sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
<HTML>
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     <TITLE></TITLE>
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-top: Black 0.5pt solid; border-bottom: Black 0.5pt solid">SEC
1746 <FONT STYLE="text-transform: uppercase">Potential persons who are to respond to the collection of information contained in
this form (2-98)&#9; are not required to respond unless the form displays a currently valid OMB control number.</FONT></P>



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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B> <B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Washington, D.C.
20549</B> </P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SCHEDULE 13D</B>&nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-variant: small-caps"><B>Under
the Securities Exchange Act of 1934</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps"><B>(Amendment
No. 8)</B></FONT><B><FONT STYLE="font-variant: small-caps"><SUP>*</SUP></FONT></B></P>

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

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">HUDSON TECHNOLOGIES, INC.</FONT></P>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font: small-caps 10pt Times New Roman, Times, Serif">(Name of Issuer)</FONT></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt">&nbsp;</P>

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

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">COMMON STOCK, $.01 PAR VALUE</FONT></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font: small-caps 10pt Times New Roman, Times, Serif">(Title of Class of Securities)</FONT></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">444144-10-9</FONT></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font: small-caps 10pt Times New Roman, Times, Serif">(CUSIP Number)</FONT></P>


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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Kevin J. Zugibe</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Hudson Technologies, Inc</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">. PO Box 1541, One Blue Hill Plaza</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Pearl River, New York 10965</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(845) 735-6000</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-variant: small-caps">(Name, Address and Telephone Number of Person</FONT> <FONT STYLE="font-variant: small-caps"></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-variant: small-caps">Authorized to receive Notices and Communications)</FONT></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">August 9, 2016</FONT></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font: small-caps 10pt Times New Roman, Times, Serif">(Date of Event which Requires Filing of this Statement)</FONT></P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 15.15pt 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-variant: small-caps">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;&sect;240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box </FONT><FONT STYLE="font-family: Wingdings; font-variant: small-caps">&#168;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif; font-variant: small-caps">.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps"><B>Note:</B>
Schedules filed in paper format shall include a signed original and five copies of the Schedule, including all exhibits. See &sect;240.13d-7
for other parties to whom copies are to be sent.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps"><SUP>*</SUP>
The remainder of this cover page shall be filled out for a reporting person'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.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0.7in 0pt 0"><FONT STYLE="font-variant: small-caps">The information
required on the remainder of this cover page shall not be deemed to be &quot;filed&quot; for the purpose of Section 18 of the
Securities Exchange Act of 1934 (&quot;Act&quot;) 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).</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 15.15pt 0pt 0">&nbsp;</P>


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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 30%; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>CUSIP NO.</B> &nbsp;<U>444144-10-9</U></FONT></TD>
    <TD STYLE="width: 42%; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line">&nbsp;</TD>
    <TD STYLE="width: 28%; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">1.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">NAMES
                                         OF REPORTING PERSONS.</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">Kevin
        J. Zugibe</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">2.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK
                                         THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a) </FONT><FONT STYLE="font-family: Wingdings">&#168;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b) </FONT><FONT STYLE="font-family: Wingdings">&#168;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">3.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; background-color: #CCCCCC; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SEC
                                         USE ONLY</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SOURCE
                                         OF FUNDS (SEE INSTRUCTIONS)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">Personal
        Funds (PF)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">5.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK
IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) </FONT><FONT STYLE="font-family: Wingdings">&#168;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;6.</FONT></TD>
    <TD COLSPAN="2" STYLE="padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">CITIZENSHIP
                                         OR PLACE OF ORGANIZATION</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">United
        States</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 14%; border-top: Black 1pt solid; padding-right: 6pt; padding-left: 6pt; text-align: center; vertical-align: bottom"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">NUMBER
                                         OF</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">SHARES</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"></P></TD>
    <TD STYLE="width: 6%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">7.</FONT></TD>
    <TD STYLE="width: 80%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SOLE
                                         VOTING POWER</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">4,521,043
        (of which 1,103,000 shares are issuable upon exercise of options)&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 6pt; padding-left: 6pt; text-align: center"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">BENEFICIALLY</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-family: Times New Roman, Times, Serif">OWNED
        BY</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">EACH
REPORTING</FONT></P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P></TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">8.</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SHARED
                                         VOTING POWER</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">0</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 6pt; padding-left: 6pt; text-align: center">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>PERSON WITH</TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">9.</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SOLE
                                         DISPOSITIVE POWER</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">4,521,043
        (of which 1,103,000 shares are issuable upon exercise of options</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"></TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">10.</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">SHARED
                                         DISPOSITIVE POWER</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">0</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif"></FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">11.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">AGGREGATE
                                         AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">4,521,043
        (of which 1,103,000 shares are issuable upon exercise of options)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">12.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">CHECK
IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) </FONT><FONT STYLE="font-family: Wingdings">&#168;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">13.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">PERCENT
                                         OF CLASS REPRESENTED BY AMOUNT IN ROW (11)</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">12.9%</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; padding-top: 0.9pt; padding-bottom: 2.7pt; font-size: 10pt; layout-grid-mode: line; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">14.</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; padding-right: 6pt; padding-left: 6pt"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">TYPE
                                         OF REPORTING PERSON*</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">IN</FONT></P></TD></TR>
</TABLE>

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

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

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

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 1.</TD><TD STYLE="text-align: justify"><U>Security and Issuer</U></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This Amendment No.
8 amends and supplements the Schedule 13D of Kevin J. Zugibe (the &ldquo;Reporting Person&rdquo;), as previously amended by Amendment
No. 1, Amendment No. 2, Amendment No. 3, Amendment No. 4, Amendment No. 5, Amendment No. 6 and Amendment No. 7 with respect to
his ownership of the Common Stock, par value $.01 per share (&quot;Common Stock&quot;), of Hudson Technologies, Inc., a New York
corporation (the &quot;Company&quot;), whose principal executive offices are located at PO Box 1541, One Blue Hill Plaza, 14<SUP>th</SUP>
Floor, Pearl River, New York 10965. This Amendment No. 8, the previous amendments to the Reporting Person&rsquo;s Schedule 13D
and the initial Schedule 13D are hereinafter collectively referred to as the &ldquo;Statement.&rdquo; Except as amended and supplemented
hereby, there has been no change in the information contained in the statement.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 2.</TD><TD STYLE="text-align: justify"><U>Identity and Background</U></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Item 2 of the Statement is hereby amended
and supplemented as follows:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(a)</TD><TD STYLE="text-align: justify">This Statement is being filed by Kevin J. Zugibe (the
&ldquo;Reporting Person&rdquo;).</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(b)</TD><TD STYLE="text-align: justify">The Reporting Person&rsquo;s business address is PO
Box 1541, One Blue Hill Plaza, Pearl River, New York 10965.</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(c)</TD><TD STYLE="text-align: justify">The Reporting Person is presently employed by the Company
as the Company&rsquo;s Chief Executive Officer. The Reporting Person is also Chairman of the Board of Directors and a director
of the Company.</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(d)</TD><TD STYLE="text-align: justify">The Reporting Person has not, during the last five
(5) years been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(e)</TD><TD STYLE="text-align: justify">The Reporting Person has not, during the last five
(5) years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction that resulted in,
or resulted in the Reporting Person being 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.</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">&nbsp;</TD><TD STYLE="text-align: justify">&nbsp;</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left">(f)</TD><TD STYLE="text-align: justify">The Reporting Person is a citizen of the United States
of America.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 3.</TD><TD STYLE="text-align: justify"><U>Source and Amount of Funds or Others Consideration</U>.</TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The source and amount
of all funds used for the purchases of the shares reported in Item 5(c) below were the Reporting Person&rsquo;s personal funds.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 4.</TD><TD STYLE="text-align: justify"><U>Purpose of Transaction.</U></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The purpose of the
dispositions of the shares of Common Stock reported in Item 5(c) below were to allow the Reporting Person to diversify his investments
and to satisfy certain debt and tax obligations, and to make gifts to a family member. The shares acquired as reported in Item
5(c) below were acquired by the Reporting Person for investment purposes.</P>

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

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 5.</TD><TD STYLE="text-align: justify"><U>Interest in Securities of the Issuer.</U></TD>
</TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Item 5 of the Statement is hereby amended
and supplemented as follows:</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) According to the
Company there were issued and outstanding 34,057,964 shares of Common Stock as of November 17, 2016. The Reporting Person beneficially
owns 4,521,043 shares of the Company&rsquo;s Common Stock, comprising 12.9% of the 34,057,964 shares of the Company&rsquo;s Common
Stock issued and outstanding as of November 16, 2016, such ownership consisting of 3,418,043 shares and 1,103,000 shares that are
issuable upon exercise of options held by the Reporting Person within sixty (60) days.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Reporting Person may be deemed to have sole power to vote, direct the vote and to dispose of 4,521,043 shares of Common Stock,
of which 1,103,000 shares are issuable upon exercise of options held by the Reporting Person within sixty (60) days.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) On December 12,
2014 the Reporting Person exercised stock options to purchase 112,500 shares of the Company&rsquo;s Common Stock at exercise prices
ranging from $0.87 to $1.02 per share, as more fully set forth on the attached Schedule A. On October 1, 2014, the Reporting Person
was issued options by the Company to purchase 251,855 shares of the Company&rsquo;s Common Stock at an exercise price $3.23 per
share, and was issued options by the Company to purchase 28,145 shares of the Company&rsquo;s Common Stock at an exercise price
of $3.55 per share, as more fully set forth on the attached Schedule A. On December 30, 2014, the Reporting Person gifted 7,500
shares of the Company&rsquo;s Common Stock to a family member. Between May 6, 2015 and May 7, 2015, the Reporting Person sold a
total of 245,300 shares of the Company&rsquo;s Common Stock in the open market, as more fully set forth on the attached Schedule
A. On May 8, 2015, the Reporting Person exercised stock options to purchase 37,500 shares of the Company&rsquo;s Common Stock at
exercise prices ranging from $0.83 and $2.15 per share, as more fully set forth on the attached Schedule A. On December 9, 2015,
the Reporting Person exercised stock options to purchase 123,750 shares of the Company&rsquo;s Common Stock at an exercise price
of $1.76 per share through a net (cashless) exercise and received 50,415 shares of the Company&rsquo;s Common Stock, as more fully
set forth on the attached Schedule A. On March 23, 2016, the Reporting Person exercised stock options to purchase 35,000 shares
of the Company&rsquo;s Common Stock at an exercise price of $1.40 per share, as more fully set forth on the attached Schedule A.
On July 18, 2016, the Reporting Person was issued options by the Company to purchase 521,510 shares of the Company&rsquo;s Common
Stock at an exercise price $3.51 per share, and was issued options by the Company to purchase 28,490 shares of the Company&rsquo;s
Common Stock at an exercise price of $3.86 per share. Between August 5, 2016 and August 9, 2016 the Reporting Person sold a total
of 600,000 shares of the Company&rsquo;s Common Stock in the open market, as more fully set forth on the attached Schedule A. On
October 7, 2016, the Reporting Person exercised stock options to purchase 9,300 shares of the Company&rsquo;s Common Stock at an
exercise price of $1.02 per share. On October 11, 2016, the Reporting Person made a charitable donation of 18,750 shares of the
Company&rsquo;s Common Stock. There have been no other transactions in the class of securities reported or that were effected during
the past sixty days by the Reporting Person.</P>

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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(d) The Reporting Person
affirms that no person other than the Reporting Person has the right to receive, or has power to direct the receipt of, dividends
from, or the proceeds from the sale of, the Common Stock owned by the Reporting Person.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(e) It is inapplicable
for the purposes hereof to state the date on which the Reporting Person ceased to be the owner of more than 5% of the Common Stock
of the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: -1.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: -1.5in">&nbsp;</P>

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

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

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

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

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
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    <TD STYLE="width: 30%; border-bottom: Black 1pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">November 18,
    2016</FONT></TD>
    <TD STYLE="width: 70%"><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">Date</FONT></P>

</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD></TR>
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    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif">/s/ Kevin J. Zugibe</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">Signature</FONT></TD>
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    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</FONT></TD>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SCHEDULE A to SCHEDULE 13D, AMENDMENT No.
8&nbsp;</P>

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<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.5in; text-align: left">I.</TD><TD STYLE="text-align: justify">Sales of Hudson Technologies, Inc. $0.01 Common Stock</TD>
</TR></TABLE>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 60%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; margin-left: 0.5in">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 34%; padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>Date</U></FONT></TD>
    <TD STYLE="width: 33%; padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>#
    Shares</U></FONT></TD>
    <TD STYLE="width: 33%; padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>$/Share
    </U></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">5/6/13</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">145,300</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$4.55*</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">5/7/15</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">100,000</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$4.08</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">8/5/16</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">&nbsp;&nbsp;60,525</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$4.879</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">8/8/16</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">173,200</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$4.778*</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">8/9/16</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">366,275</FONT></TD>
    <TD STYLE="padding: 0; font-size: 10pt; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$4.873*</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">*Weighted average price</P>

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<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.5in; text-align: left">II</TD><TD STYLE="text-align: justify">Hudson Technologies, Inc. $0.01 Common Stock purchased
through exercise of Stock &#9;Options.</TD>
</TR></TABLE>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 80%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; margin-left: 0.5in">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>Date Exercised</U></FONT></TD>
    <TD STYLE="width: 25%; padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>Date Issued</U></FONT></TD>
    <TD STYLE="width: 25%; padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U># Shares</U></FONT></TD>
    <TD STYLE="width: 25%; padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt"><U>Exercise Price&nbsp;&nbsp;</U></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0">&nbsp;</TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">12/12/14</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">1/3/05</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">112,500</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$1.02</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">12/12/14</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">4/1/05</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">18,750</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$0.87</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">5/8/15</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">7/8/05</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">18,750</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$0.83</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">5/18/15</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">9/30/05</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">18,750</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$2.15</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">12/9/15</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">12/29/05</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">123,750</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$1.76**</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">3/23/16</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">3/31/06</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">35,000</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$1.40</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">10/7/16</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">10/10/16</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">9,300</FONT></TD>
    <TD STYLE="padding: 0; layout-grid-mode: line; text-indent: 0"><FONT STYLE="font-size: 10pt">$1.02</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">** Net (cashless) exercise, received 50,415 shares</P>



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