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 *

HEATH JAMES R		 2. Issuer Name and Ticker or Trading Symbol

IsoPlexis Corp [ ISO ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O ISOPLEXIS CORPORATION, 35 NE INDUSTRIAL ROAD		 3. Date of Earliest Transaction (MM/DD/YYYY)

3/10/2023
(Street)

BRANFORD, CT 06405
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

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

_X _ Form filed by One Reporting Person
___ 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 3/10/2023  M  81888 A$0.1275 81888 D  
Common Stock 3/10/2023  M  32000 A$0.2788 113888 D  
Common Stock 3/10/2023  M  40000 A$0.44 153888 D  
Common Stock 3/10/2023  M  48000 A$0.7263 201888 D  

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
Stock Option $0.1275 3/10/2023  M     81888   (1)3/21/2025 Common Stock 81888 $0 0 D  
Stock Option $0.2788 3/10/2023  M     32000   (2)11/25/2025 Common Stock 32000 $0 0 D  
Stock Option $0.44 3/10/2023  M     40000   (3)8/17/2026 Common Stock 40000 $0 0 D  
Stock Option $0.7263 3/10/2023  M     48000   (4)9/30/2027 Common Stock 48000 $0 0 D  
Explanation of Responses:
(1) (1) 25% vested March 22, 2016 and the reminder vested in 36 monthly installments thereafter.
(2) (2) 25% vested November 26, 2016 and the reminder vested in 36 monthly installments thereafter.
(3) (3) 25% vested August 18, 2017 and the reminder vested in 36 monthly installments thereafter.
(4) (4) 25% vested October 1, 2018 and the reminder vested in 36 monthly installments thereafter.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
HEATH JAMES R
C/O ISOPLEXIS CORPORATION
35 NE INDUSTRIAL ROAD
BRANFORD, CT 06405		X
Signatures
/s/James R. Heath3/10/2023
**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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