STANDARD BIOTOOLS INC. — Director's Dealing 2024

Feb 22, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STANDARD BIOTOOLS INC. (LAB)
CIK: 0001162194
Period of Report: 2024-02-20

Reporting Person: Casdin Eli (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-20	Common Stock	A	22800	$2.50	Acquired	103556	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7548000	Indirect
Common Stock	11246525	Indirect
Common Stock	2744219	Indirect
Common Stock	1200000	Indirect

Footnotes

F1: Represents Restricted Stock Units that vest in four equal quarterly installments beginning on March 15, 2024. The Reporting Person has deferred settlement of the Restricted Stock Units until the earlier to occur of the Reporting Person's termination of service and a change of control.

F2: The Restricted Stock Units were issued to the Reporting Person, who elected to take Restricted Stock Units in lieu of $57,000 in cash compensation for services as a board member.

F3: The shares are held of record by CMLS Holdings II LLC ("CMLS Holdings II"). The Board of Managers of CMLS Holdings II includes Mr. Casdin, who, as a member of the Board of Managers of CMLS Holdings III, shares voting and investment discretion with respect to the common stock held by CMLS Holdings II. Mr. Casdin may be deemed to have or share beneficial ownership of the securities held by CMLS Holdings II.

F4: The shares reflected as beneficially owned by Casdin Partners Master Fund, L.P. in the table above are owned directly by Casdin Partners Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, L.P., (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

F5: The shares held by Casdin Private Growth Equity Fund, L.P. may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Private Growth Equity Fund, L.P., (ii) Casdin Private Growth Equity GP, LLC, the general partner of Casdin Private Growth Equity Fund, L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Private Growth Equity GP, LLC.

F6: The securities are owned directly by Casdin Partners FO1-MSV, LP ("Casdin FO1") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin FO1, (ii) Casdin Partners GP, LLC, the general partner of Casdin FO1, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.