Jane Henderson - May 3, 2021 Form 4 Insider Report for Sesen Bio, Inc. (CARM)

Role: Director
Signature: /s/ Monica Forbes, as attorney-in-fact
Stock symbol: CARM
Transactions as of: May 3, 2021
Transactions value $: $0
Form type: 4
Date filed: 5/10/2021, 08:45 PM
Next filing: May 20, 2021

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	CARM	Stock Option	Award	$0	+92.5K		$0.00	92.5K	May 3, 2021	Common Stock	92.5K	$2.79	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The option was granted on May 3, 2021 and vests over one year, with 1/12th of the shares subject to the option vesting at the end of each successive one-month period following the grant date until the earlier of a) the day that is one business day prior to the date of the next annual meeting and b) the first anniversary of the grant date, at which time such option shall be fully vested. In April 2021, Sesen Bio, Inc.'s compensation committee, based on market analysis by Radford, recommended to the Sesen Bio, Inc. board of directors, and the board of directors approved, an increase in non-employee director equity compensation from the 50th percentile to the 75th percentile of the Radford market analysis of public, pre-commercial biopharmaceutical companies with less than 200 employees and market values between $250 million and $1 billion. The option granted to purchase 92,500 shares of Sesen Bio, Inc.'s common stock was equivalent to the 75th percentile of such Radford market analysis.

Content

The option was granted on May 3, 2021 and vests over one year, with 1/12th of the shares subject to the option vesting at the end of each successive one-month period following the grant date until the earlier of a) the day that is one business day prior to the date of the next annual meeting and b) the first anniversary of the grant date, at which time such option shall be fully vested. In April 2021, Sesen Bio, Inc.'s compensation committee, based on market analysis by Radford, recommended to the Sesen Bio, Inc. board of directors, and the board of directors approved, an increase in non-employee director equity compensation from the 50th percentile to the 75th percentile of the Radford market analysis of public, pre-commercial biopharmaceutical companies with less than 200 employees and market values between $250 million and $1 billion. The option granted to purchase 92,500 shares of Sesen Bio, Inc.'s common stock was equivalent to the 75th percentile of such Radford market analysis.