Mohan Bala - 05 Sep 2023 Form 3 Insider Report for Mersana Therapeutics, Inc. (MRSN)

Role
SVP, Chief Development Officer
Signature
/s/ Alejandra Carvajal, as attorney-in-fact
Issuer symbol
MRSN
Transactions as of
05 Sep 2023
Net transactions value
$0
Form type
3
Filing time
07 Sep 2023, 18:46:47 UTC
Next filing
27 Oct 2023
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding MRSN Common Stock 4,395 05 Sep 2023 Direct

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
holding MRSN Stock Option (right to buy) 05 Sep 2023 Common Stock 112,500 $8.63 Direct F1
holding MRSN Stock Option (right to buy) 05 Sep 2023 Common Stock 157,500 $6.06 Direct F2
holding MRSN Restricted stock unit 05 Sep 2023 Common Stock 18,750 $0.000000 Direct F3, F4
holding MRSN Restricted stock unit 05 Sep 2023 Common Stock 35,000 $0.000000 Direct F4, F5
holding MRSN Restricted stock unit 05 Sep 2023 Common Stock 50,000 $0.000000 Direct F4, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 25% of the shares underlying the option vested on October 25, 2022, and the remainder vested or will vest in equal quarterly installments thereafter, subject to the Reporting Person's continued service to the Issuer on such vesting date.
F2 The shares underlying the option vested or will vest in equal quarterly installments over four years following the date of grant, January 13, 2023, subject to the Reporting Person's continued service to the Issuer on such vesting date.
F3 The restricted stock units ("RSUs") will vest in three equal installments on October 25, 2023, October 25, 2024, and October 25, 2025, subject to the Reporting Person's continued service to the Issuer on such vesting date.
F4 Each RSU represents the contingent right to receive one share of common stock of the Issuer.
F5 The RSUs will vest in equal annual installments over four years following the date of grant, January 13, 2023, subject to the Reporting Person's continued service to the Issuer on such vesting date.
F6 The RSUs will vest on October 1, 2024, subject to the Reporting Person's continued service to the Issuer on such vesting date.

Remarks:

Exhibit 24 - Power of Attorney