Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	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 * Caligan Partners LP	2. Issuer Name and Ticker or Trading Symbol STANDARD BIOTOOLS INC. [ LAB ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    __X__ 10% Owner _____ Officer (give title below)    __X__ Other (specify below) See Remarks
(Last)          (First)          (Middle) 590 MADISON AVENUE	3. Date of Earliest Transaction (MM/DD/YYYY) 6/13/2022
(Street) NEW YORK, NY 10022 (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, $0.001 par value per share ("Common Stock")	6/13/2022		P		100000	A	$1.70 (1)(3)	10523188	I	See footnote (2)

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

Explanation of Responses:
(1)	Price is the volume weighted average price of all trades by Caligan Partners LP ("Caligan") and David Johnson (together with Caligan, the "Reporting Persons") on the transaction date for prices ranging from $1.64 to $1.75.
(2)	The securities reported herein are held by an affiliated fund and managed account of Caligan. David Johnson is a Partner of Caligan and a Managing Member of Caligan Partners GP LLC, the general partner of Caligan.
(3)	The Reporting Persons hereby undertake to provide upon request of the staff of the Securities and Exchange Commission full information regarding the number of shares traded at each separate price.

Remarks: The Reporting Persons disclaim beneficial ownership in the securities reported on this Form 4 except to the extent of his or its pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that any of the Reporting Persons are the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Caligan Partners LP 590 MADISON AVENUE NEW YORK, NY 10022		X		See Remarks
JOHNSON DAVID EDWARD 590 MADISON AVENUE NEW YORK, NY 10022		X

Signatures
Caligan Partners LP, By: /s/ David Edward Johnson, Partner		6/15/2022
**Signature of Reporting Person		Date
/s/ David Edward Johnson		6/15/2022
**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).
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