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$MRSN All transactions

Mersana Therapeutics, Inc.

M 10b5-1 Plan

$ Value

$0

Shares

250

Price

$0

Filed

Oct 28

Insider

Name

Bala Mohan

Title

SVP, Chief Development Officer

CIK

0001991787

Roles

Officer

Transaction Details

Transaction Date

2025-10-25

Code

M

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

2,999

Footnotes

Represents shares of common stock received upon vesting of the restricted stock units ("RSUs") awarded to the Reporting Person on October 25, 2021. | Amounts reported in this Form 4 reflect the one-for-twenty-five reverse stock split effected by the Issuer on July 25, 2025. | Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person. | Each RSU represents the contingent right to receive one share of common stock of the Issuer. | Fully vested as of October 25, 2025.

Filing Info

Accession No.

0001104659-25-103170

Form Type

4

Issuer CIK

0001442836

Bala Mohan's History

Date Ticker Type Value
2026-01-06 MRSN U
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D
2026-01-06 MRSN D

Other Insiders at MRSN (90d)

No other insider activity at this issuer in the last 90 days.