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 * Chappell Dale 2. Issuer Name and Ticker or Trading Symbol HUMANIGEN, INC [ HGEN ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    __X__ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Scientific Officer
(Last)          (First)          (Middle)
C/O OPUS EQUUM INC., PO BOX 788
3. Date of Earliest Transaction (MM/DD/YYYY)
3/2/2022
(Street)
DOLORES, CO 81323
(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

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 Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. 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 Date 7. 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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Call Option (Right to Buy) (1) $2.5  3/2/2022    P     680      3/2/2022  5/20/2022  Common Stock, $0.001 par value  68000  $0.596  680  I (2) By Black Horse Capital LP 
Call Option (Right to Buy) (1) $5  3/2/2022    P     11      3/2/2022  5/20/2022  Common Stock, $0.001 par value  1100  $0.3255  11  I (2) By Black Horse Capital LP 
Call Option (Right to Buy) (1) $2.5  3/3/2022    P     5      3/3/2022  5/20/2022  Common Stock, $0.001 par value  500  $0.7  685  I (2) By Black Horse Capital LP 
Call Option (Right to Buy) (1) $5  3/3/2022    P     173      3/3/2022  5/20/2022  Common Stock, $0.001 par value  17300  $0.35  184  I (2) By Black Horse Capital LP 
Call Option (Right to Buy) (1) $2.5  3/4/2022    P     127      3/4/2022  5/20/2022  Common Stock, $0.001 par value  12700  $0.8972  812  I (2) By Black Horse Capital LP 
Call Option (Right to Buy) (1) $2.5  3/2/2022    P     1360      3/2/2022  5/20/2022  Common Stock, $0.001 par value  136000  $0.596  1360  I (3) By Black Horse Capital Master Fund Ltd. 
Call Option (Right to Buy) (1) $5  3/2/2022    P     22      3/2/2022  5/20/2022  Common Stock, $0.001 par value  2200  $0.3255  22  I (3) By Black Horse Capital Master Fund Ltd. 
Call Option (Right to Buy) (1) $2.5  3/3/2022    P     10      3/3/2022  5/20/2022  Common Stock, $0.001 par value  1000  $0.7  1370  I (3) By Black Horse Capital Master Fund Ltd. 
Call Option (Right to Buy) (1) $5  3/3/2022    P     346      3/3/2022  5/20/2022  Common Stock, $0.001 par value  34600  $0.35  368  I (3) By Black Horse Capital Master Fund Ltd. 
Call Option (Right to Buy) (1) $2.5  3/4/2022    P     255      3/4/2022  5/20/2022  Common Stock, $0.001 par value  25500  $0.8972  1625  I (3) By Black Horse Capital Master Fund Ltd. 
Call Option (Right to Buy) (1) $2.5  3/2/2022    P     4762      3/2/2022  5/20/2022  Common Stock, $0.001 par value  476200  $0.596  4762  I (4) By Cheval Holdings, Ltd. 
Call Option (Right to Buy) (1) $5  3/2/2022    P     77      3/2/2022  5/20/2022  Common Stock, $0.001 par value  7700  $0.3255  77  I (4) By Cheval Holdings, Ltd. 
Call Option (Right to Buy) (1) $2.5  3/3/2022    P     36      3/3/2022  5/20/2022  Common Stock, $0.001 par value  3600  $0.7  4798  I (4) By Cheval Holdings, Ltd. 
Call Option (Right to Buy) (1) $5  3/3/2022    P     1213      3/3/2022  5/20/2022  Common Stock, $0.001 par value  121300  $0.35  1290  I (4) By Cheval Holdings, Ltd. 
Call Option (Right to Buy) (1) $2.5  3/4/2022    P     891      3/4/2022  5/20/2022  Common Stock, $0.001 par value  89100  $0.8972  5689  I (4) By Cheval Holdings, Ltd. 

Explanation of Responses:
(1)  This Form 4 is filed jointly by Black Horse Capital LP (the "Domestic Fund"), Black Horse Capital Master Fund Ltd. (the "Offshore Fund"), Cheval Holdings, Ltd. ("Cheval"), Black Horse Capital Management LLC ("BH Management") and Dale Chappell (collectively, the "Reporting Persons"). Each of the Reporting Persons 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. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. The filing of this Form 4 shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any securities of the Issuer he or it does not directly own.
(2)  Securities owned directly by the Domestic Fund. BH Management, as the managing general partner of the Domestic Fund, may be deemed to beneficially own the securities owned directly by the Domestic Fund. Dale Chappell, as the managing member of BH Management, may be deemed to beneficially own the securities owned directly by the Domestic Fund.
(3)  Securities owned directly by the Offshore Fund. Dale Chappell, as the controlling person of the Offshore Fund, may be deemed to beneficially own the securities owned directly by the Offshore Fund.
(4)  Securities owned directly by Cheval. Each of BH Management, by virtue of having been granted by the Board of Directors of Cheval the power to manage the securities of the Issuer owned by Cheval, and Dale Chappell, as the managing member of BH Management, may be deemed to beneficially own the securities owned directly by Cheval.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Chappell Dale
C/O OPUS EQUUM INC.
PO BOX 788
DOLORES, CO 81323
X X Chief Scientific Officer
BLACK HORSE CAPITAL LP
C/O OPUS EQUUM INC.
PO BOX 788
DOLORES, CO 81323

X

Black Horse Capital Master Fund Ltd.
C/O OPUS EQUUM, INC.
P.O. BOX 788
DOLORES, CO 81323

X

BLACK HORSE CAPITAL MANAGEMENT LLC
C/O OPUS EQUUM INC.
PO BOX 788
DOLORES, CO 81323

X

Cheval Holdings, Ltd.
P.O. BOX 309G, UGLAND HOUSE
GEORGETOWN
GRAND CAYMAN, E9 KY1-1104

X


Signatures
BLACK HORSE CAPITAL LP By: Black Horse Capital Management LLC, its Managing General Partner By: /s/ Dale Chappell Name: Dale Chappell Title: Manager 3/4/2022
**Signature of Reporting Person Date
BLACK HORSE CAPITAL MASTER FUND LTD. By: /s/ Dale Chappell Name: Dale Chappell Title: Director 3/4/2022
**Signature of Reporting Person Date
BLACK HORSE CAPITAL MANAGEMENT LLC By: /s/ Dale Chappell Name: Dale Chappell Title: Manager 3/4/2022
**Signature of Reporting Person Date
CHEVAL HOLDINGS, LTD. By: /s/ Dale Chappell Name: Dale Chappell Title: Director 3/4/2022
**Signature of Reporting Person Date
/s/ Dale Chappell DALE CHAPPELL 3/4/2022
**Signature of Reporting Person Date

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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