Form 4/A - Statement of changes in beneficial ownership of securities: [Amend]
SEC Accession No. 0001171843-26-002894
Filing Date
2026-04-30
Accepted
2026-04-30 16:00:48
Documents
1
Period of Report
2026-04-29

Document Format Files

Seq Description Document Type Size
1 ownership.html 4/A  
1 ownership.xml 4/A 4183
  Complete submission text file 0001171843-26-002894.txt   5676
Mailing Address C/O PSYCHEMEDICS CORPORATION 125 NAGOG PARK ACTON MA 01720
Business Address
Lerner Neil (Reporting) CIK: 0001505148 (see all company filings)

Type: 4/A | Act: 34 | File No.: 001-39696 | Film No.: 26924788

Mailing Address 80 GUEST STREET BOSTON MA 02135
Business Address 80 GUEST STREET BOSTON MA 02135 617-500-8099
Compass Therapeutics, Inc. (Issuer) CIK: 0001738021 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)