SC 13G: ARCA biopharma, Inc.

AI Summary

SC 13G filing by ARCA biopharma, Inc..

Risk Assessment

Risk Level: low

FAQ

Key Financial Figures

• $0.001 — Inc. (Name of Issuer) Common stock, $0.001 par value per share (Title of Class o

Filing Documents

• tm2412836d2_sc13g.htm (SC 13G) — 184KB
• 0001104659-24-054266.txt ( ) — 186KB

From the Filing

SC 13G 1 tm2412836d2_sc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* ARCA biopharma, Inc. (Name of Issuer) Common stock, $0.001 par value per share (Title of Class of Securities) 00211Y506 (CUSIP Number) April 17, 2024 (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 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 the disclosures 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 CUSIP No. 00211Y506 Page 2 of 17 1. Names of Reporting Persons Venrock Healthcare Capital Partners III, L.P. 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (1) (b) 3. SEC Use Only 4. Citizenship or Place of Organization Delaware Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared Voting Power 754,669 (2) 7. Sole Dispositive Power 0 8. Shared Dispositive Power 754,669 (2) 9. Aggregate Amount Beneficially Owned by Each Reporting Person 754,669 (2) 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 5.2% (3) 12. Type of Reporting Person (See Instructions) PN (1) Venrock Healthcare Capital Partners III, L.P., VHCP Co-Investment Holdings III, LLC, Venrock Healthcare Capital Partners EG, L.P., VHCP Management III, LLC, VHCP Management EG, LLC, Nimish Shah and Bong Koh are members of a group for the purposes of this Schedule 13G. (2) Consists of (i) 164,442 shares held by Venrock Healthcare Capital Partners III, L.P.; (ii) 16,450 shares held by VHCP Co-Investment Holdings III, LLC; and (iii) 573,777 shares held by Venrock Healthcare Capital Partners EG, L.P. (3) This percentage is calculated based upon 14,501,143 shares of common stock outstanding as of January 31, 2024, as disclosed in the Issuer’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 1, 2024. CUSIP No. 00211Y506 Page 3 of 17 1. Names of Reporting Persons VHCP Co-Investment Holdings III, LLC 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (1) (b) 3. SEC Use Only 4. Citizenship or Place of Organization Delaware Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared Voting Power 754,669 (2) 7. Sole Dispositive Power 0 8. Shared Dispositive Power 754,669 (2) 9. Aggregate Amount Beneficially Owned by Each Reporting Person 754,669 (2) 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 5.2% (3) 12. Type of Reporting Person (See Instructions) OO (1) Venrock Healthcare Capital Partners III, L.P., VHCP Co-Investment Holdings III, LLC, Venrock Healthcare Capital Partners EG, L.P., VHCP Management III, LLC, VHCP Management EG, LLC, Nimish Shah and Bong Koh are members of a group for the purposes of this Schedule 13G. (2) Consists of (i) 164,442 shares held by Venrock Healthcare Capital Partners III, L.P.; (ii) 16,450 shares held by VHCP Co-Investment Holdings III, LLC; and (iii) 573,777 shares held by Venrock Healthcare Capital Partners EG, L.P. (3) This percentage is calculated based upon 14,501,143 shares of common stock outstanding as of January 31, 2024, as disclosed in the Issuer’s Annual Report on Form 10-K filed with the SEC on February 1, 2024. CUSIP No. 00211Y506 Page 4 of 17 1. Names of Reporting Persons Venrock Healthcare Capital Partners EG, L.P. 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (1) (b) 3. SEC Use Only 4. Citizenship or Place of Organization Delaware Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared Voting Power 754,669 (2) 7. Sole Dispositive Power 0 8. Shared Dispositive Power 754,669 (2) 9. Aggregate Amount Beneficially Owned by Each Reporting Person 754,669 (2) 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 5.2% (3) 12. Type of Reporting Person (See Instructions) PN (1) Venrock Healthcare Capital Partners III, L.P., VHCP Co-Investment Holdings III, LLC, Venrock Healthcare Capital Partners EG, L.P., VHCP

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