Lawrence Alleva - 02 Jan 2025 Form 4 Insider Report for Mersana Therapeutics, Inc. (MRSN)

Role: Director
Signature: /s/ Alejandra Carvajal, Attorney-in-Fact
Issuer symbol: MRSN
Transactions as of: 02 Jan 2025
Net transactions value: $0
Form type: 4
Filing time: 03 Jan 2025, 16:39:05 UTC
Previous filing: 03 Oct 2024
Next filing: 26 Feb 2025
SEC: View on sec.gov

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MRSN	Stock Option (right to buy)	Award	$0	+12,521		$0.000000	12,521	02 Jan 2025	Common Stock	12,521	$1.40	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This stock option was granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of stock options rather than cash. The options were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy, as amended, in lieu of retainer fees of $14,750 for the quarter ended December 31, 2024.
F2	Fully vested as of the date of grant.

Content

This stock option was granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of stock options rather than cash. The options were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy, as amended, in lieu of retainer fees of $14,750 for the quarter ended December 31, 2024.

Fully vested as of the date of grant.