SEC FORM 4

SEC FORM 4 SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Casdin Partners Master Fund, L.P.

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
STANDARD BIOTOOLS INC. [ LAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
04/04/2022

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Series B-1 Convertible Preferred Stock	⁽¹⁾	04/04/2022		A		127,780		⁽¹⁾	⁽¹⁾	Common Stock	37,582,346⁽¹⁾	⁽²⁾	127,780	D⁽³⁾

1. Name and Address of Reporting Person^*

Casdin Partners Master Fund, L.P.

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Casdin Capital, LLC

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Casdin Partners GP, LLC

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Casdin Private Growth Equity Fund II, L.P.

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

Casdin Private Growth Equity Fund II GP, LLC

(Last)

(First)

(Middle)

1350 AVENUE OF THE AMERICAS, SUITE 2600

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

Explanation of Responses:

1. Each share of the Issuer's Series B-1 Convertible Preferred Stock (the "Series B-1 Preferred Stock") is convertible at the option of the Reporting Person at any time into a number of shares of the Issuer's common stock, par value $0.001 per share, equal to the conversion rate, which is initially 294.1176, subject to certain anti-dilution adjustments and limitations on conversion pursuant to the Certificate of Designation for the Series B-1 Preferred Stock.

2. On April 4, 2022, the Issuer issued the Series B-1 Preferred Stock (i) in exchange for aggregate cash consideration of $112.5 million, pursuant to the Series B-1 Convertible Preferred Stock Purchase Agreement, dated as of January 23, 2022, among the Issuer, Casdin Partners Master Fund, L.P. ("Casdin Master Fund") and Casdin Private Growth Equity Fund II, L.P. ("Casdin Private Growth Fund") and (ii) upon the conversion of $12.5 million aggregate principal amount of term loans, including accrued and unpaid interest, pursuant to the Series B-1 Loan Agreement, dated as of January 23, 2022, among the Issuer, Casdin Master Fund and Casdin Private Growth Fund.

3. These shares are held by Casdin Master Fund and Casdin Private Growth Fund. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Master Fund and Casdin Private Growth Fund. Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Master Fund and Casdin Private Growth Equity Fund II GP, LLC ("Casdin Private Growth GP") is the general partner of Casdin Private Growth Fund. Eli Casdin is the managing member of Casdin Capital, Casdin Partners GP and Casdin Private Growth GP. Each of Casdin Capital, Casdin Partners GP, Casdin Private Growth GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any.

Remarks:

Eli Casdin has been deputized to represent the Reporting Persons on the board of directors of the Issuer. By virtue of Mr. Casdin's representation, for purposes of Section 16 of the Securities Exchange Act of 1934 (the "Exchange Act"), each of the Reporting Persons may be deemed directors by deputization of the Issuer. Mr. Casdin files separate Section 16 reports disclosing securities of the Issuer that he may be deemed to beneficially own for Section 16 purposes.

	Casdin Partners Master Fund, L.P., By: Casdin Partners GP, LLC, Its: General Partner, By: /s/ Eli Casdin, Its: Managing Member	04/06/2022
	Casdin Capital, LLC, By: /s/ Eli Casdin, Its: Managing Member	04/06/2022
	Casdin Partners GP, LLC, By: /s/ Eli Casdin, Its: Managing Member	04/06/2022
	Casdin Private Growth Equity Fund II, L.P., By: Casdin Private Growth Equity Fund II GP, LLC, By: /s/ Eli Casdin, Its: Managing Member	04/06/2022
	Casdin Private Growth Equity Fund II GP, LLC, By: /s/ Eli Casdin, Its: Managing Member	04/06/2022
	** 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 Number.

SEC Form 4 filed by Casdin Partners Master Fund, L.P.