FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Funicular Fund, LP		 2. Issuer Name and Ticker or Trading Symbol

ARCA biopharma, Inc. [ ABIO ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
_____ Officer (give title below)    __X__ Other (specify below)
See Footnote 1
(Last)          (First)          (Middle)

2261 MARKET STREET, #4307		 3. Date of Earliest Transaction (MM/DD/YYYY)

5/5/2022
(Street)

SAN FRANCISCO, CA 94114
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
 6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock (1)5/5/2022  P  16903 A$2.2747 (2)2244487 D (3) 
Common Stock (1)5/6/2022  P  57998 A$2.2827 (4)2302485 D (3) 
Common Stock (1)5/9/2022  P  49221 A$2.2698 (5)2351706 D (3) 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		8. Price of Derivative Security
(Instr. 5)		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Put Option (obligation to buy) (1)$2.50           12/16/2022 12/16/2022 Common Stock 1450000  14500 D  
Explanation of Responses:
(1) This Form 4 is filed by the Funicular Fund, LP (the "Fund") and Jacob Ma-Weaver (the "Reporting Persons"). The Reporting Persons and Cable Car Capital LLC ("Cable Car") may be deemed to be a member of a Section 13(d) group that may be deemed to collectively beneficially own more than 10% of the Issuer's outstanding shares of Common Stock (the "Shares"). Each of the Reporting Persons and Cable Car disclaim beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.
(2) Represents a weighted average price. These Shares were purchased in multiple transactions at prices ranging from $2.2650 to $2.2750, inclusive of brokerage commissions. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares purchased at each separate price within the range set forth in this footnote.
(3) Represents securities directly owned by the Fund. Cable Car, as the general partner of the Fund, may be deemed to beneficially own the securities directly owned by the Fund. Mr. Ma-Weaver, as the Managing Member of Cable Car, may be deemed to beneficially own the securities directly owned by the Fund.
(4) Represents a weighted average price. These Shares were purchased in multiple transactions at prices ranging from $2.2600 to $2.2850, inclusive of brokerage commissions. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares purchased at each separate price within the range set forth in this footnote.
(5) Represents a weighted average price. These Shares were purchased in multiple transactions at prices ranging from $2.2650 to $2.2750, inclusive of brokerage commissions. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares purchased at each separate price within the range set forth in this footnote.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Funicular Fund, LP
2261 MARKET STREET
#4307
SAN FRANCISCO, CA 94114


See Footnote 1
Ma-Weaver Jacob
2261 MARKET STREET
#4307
SAN FRANCISCO, CA 94114


See Footnote 1
Signatures
Funicular Fund, LP, By: Cable Car Capital LLC, its general partner, By: /s/ Jacob Ma-Weaver, Managing Member5/9/2022
**Signature of Reporting PersonDate

By: /s/ Jacob Ma-Weaver5/9/2022
**Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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.
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