SC 13G/A: ARCA biopharma, Inc.

AI Summary

SC 13G/A filing by ARCA biopharma, Inc..

Risk Assessment

Risk Level: low

FAQ

Key Financial Figures

• $0.001 — me of Issuer) Common Stock, par value $0.001 per share (Title of Class Securities)

Filing Documents

• d804055dsc13ga.htm (SC 13G/A) — 80KB
• 0001193125-24-088757.txt ( ) — 82KB

From the Filing

SC 13G/A 1 d804055dsc13ga.htm SC 13G/A SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* ARCA biopharma, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class Securities) 00211Y506 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: Rule 13d-1(b) Rule 13d-1(c) Rule 13d-1(d) The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosure provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) 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). Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number . Page 2 of 9 Pages CUSIP No. 00211Y506 1 N AME OF R EPORTING P ERSONS . I.R.S. I DENTIFICATION N OS . OF ABOVE PERSONS ( ENTITIES ONLY ). Western Standard, LLC 26-2921385 2 C HECK THE A PPROPRIATE B OX IF A M EMBER OF A G ROUP (S EE I NSTRUCTIONS ) (A)(B) 3 SEC U SE O NLY 4 C ITIZENSHIP OR P LACE OF O RGANIZATION California NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5 S OLE V OTING P OWER 1,410,143 * 6 S HARED V OTING P OWER 0 7 S OLE D ISPOSITIVE P OWER 1,410,143 * 8 S HARED D ISPOSITIVE P OWER 0 9 A GGREGATE A MOUNT B ENEFICIALLY O WNED BY E ACH R EPORTING P ERSON 1,410,143 * 10 C HECK IF THE A GGREGATE A MOUNT IN R OW (9) E XCLUDES C ERTAIN S HARES ( SEE I NSTRUCTIONS ) 11 P ERCENT OF C LASS R EPRESENTED BY A MOUNT IN R OW (9) 9.8% * 12 T YPE OF R EPORTING P ERSON ( SEE I NSTRUCTIONS ) IA * This cover page reports the beneficial ownership interest of Western Standard, LLC (Western Standard) in the Issuers Common Stock as of December 31, 2023. On April 3, 2024, all of the shares of the Issuers Common Stock that may be deemed beneficially owned by Western Standard were sold by the private funds managed by Western Standard (Funds) that directly held all of the reported shares of the Issuers Common Stock, including Western Standard Partners, L.P. (WSP LP). Page 3 of 9 Pages CUSIP No. 00211Y506 1 N AME OF R EPORTING P ERSONS . I.R.S. I DENTIFICATION N OS . OF ABOVE PERSONS ( ENTITIES ONLY ). Eric D. Andersen 2 C HECK THE A PPROPRIATE B OX IF A M EMBER OF A G ROUP (S EE I NSTRUCTIONS ) (A)(B) 3 SEC U SE O NLY 4 C ITIZENSHIP OR P LACE OF O RGANIZATION United States of America NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5 S OLE V OTING P OWER 1,410,143 * 6 S HARED V OTING P OWER 0 7 S OLE D ISPOSITIVE P OWER 1,410,143 * 8 S HARED D ISPOSITIVE P OWER 0 9 A GGREGATE A MOUNT B ENEFICIALLY O WNED BY E ACH R EPORTING P ERSON 1,410,143 * 10 C HECK IF THE A GGREGATE A MOUNT IN R OW (9) E XCLUDES C ERTAIN S HARES ( SEE I NSTRUCTIONS ) 11 P ERCENT OF C LASS R EPRESENTED BY A MOUNT IN R OW (9) 9.8% * 12 T YPE OF R EPORTING P ERSON ( SEE I NSTRUCTIONS ) IN, HC * This cover page reports the beneficial ownership interest of Eric Andersen in the Issuers Common Stock as of December 31, 2023. On April 3, 2024, all of the shares of the Issuers Common Stock that may be deemed beneficially owned by Mr. Andersen as the managing member of Western Standard were sold by the Funds that directly held all of the reported shares of the Issuers Common Stock, including WSP LP. Page 4 of 9 Pages CUSIP No. 00211Y506 1 N AME OF R EPORTING P ERSONS . I.R.S. I DENTIFICATION N OS . OF ABOVE PERSONS ( ENTITIES ONLY ). Western Standard Partners, L.P. 26-2921468 2 C HECK THE A PPROPRIATE B OX IF A M EMBER OF A G ROUP (S EE I NSTRUCTIONS ) (A)(B) 3 SEC U SE O NLY 4 C ITIZENSHIP OR P LACE OF O RGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5 S OLE V OTING P OWER 1,108,669 6 S HARED V OTING P OWER 0 7 S OLE D ISPOSITIVE P OWER 1,108,669 8 S HARED D ISPOSITIVE P OWER 0 9 A GGREGATE A MOUNT B ENEFICIALLY O WNED BY E ACH R EPORTING P ERSON 1,108,669 10 C HECK IF THE A GGREGATE A MOUNT IN R OW (9) E XCLUDES C ERTAIN S HARES ( SEE I NSTRUCTIONS ) 11 P ERCENT OF C LASS R EPRESENTED BY A MOUNT IN R OW (9) 7.7% 12 T YPE OF R EPORTING P ERSON ( SEE I NSTRUCTIONS ) PN * This cover page reports the beneficial ownership interest of WSP LP

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