John Trainer - Apr 4, 2023 Form 4 Insider Report for NexImmune, Inc. (NEXI)

Role: Chief Financial Officer
Signature: /s/ John Rudy, attorney-in-fact
Stock symbol: NEXI
Transactions as of: Apr 4, 2023
Transactions value $: $0
Form type: 4
Date filed: 4/6/2023, 08:41 PM
Previous filing: Nov 25, 2022

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	NEXI	Stock Option (right to buy)	Award	$0	+89.1K		$0.00	89.1K	Apr 4, 2023	Common Stock	89.1K	$0.41	Direct	F1
transaction	NEXI	Stock Option (right to buy)	Disposed to Issuer		-78.1K	-100%		0	Apr 4, 2023	Common Stock	78.1K	$4.22	Direct	F2
transaction	NEXI	Stock Option (right to buy)	Award		+27.7K			27.7K	Apr 4, 2023	Common Stock	27.7K	$1.23	Direct	F2
transaction	NEXI	Stock Option (right to buy)	Award		+50.4K			50.4K	Apr 4, 2023	Common Stock	50.4K	$0.82	Direct	F2
transaction	NEXI	Stock Option (right to buy)	Disposed to Issuer		-29K	-100%		0	Apr 4, 2023	Common Stock	29K	$17.00	Direct	F3
transaction	NEXI	Stock Option (right to buy)	Award		+18.7K			18.7K	Apr 4, 2023	Common Stock	18.7K	$1.23	Direct	F3
transaction	NEXI	Stock Option (right to buy)	Award		+10.3K			10.3K	Apr 4, 2023	Common Stock	10.3K	$0.82	Direct	F3
transaction	NEXI	Stock Option (right to buy)	Disposed to Issuer		-103K	-100%		0	Apr 4, 2023	Common Stock	103K	$5.17	Direct	F4
transaction	NEXI	Stock Option (right to buy)	Award		+89.2K			89.2K	Apr 4, 2023	Common Stock	89.2K	$1.23	Direct	F4
transaction	NEXI	Stock Option (right to buy)	Award		+13.7K			13.7K	Apr 4, 2023	Common Stock	13.7K	$0.82	Direct	F4

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

Explanation of Responses:

Id	Content
F1	25% of this option shall vest and become exercisable on April 4, 2024, with the remainder vesting in 36 equal monthly installments thereafter, subject to Mr. Trainer's continued service to the corporation on each vesting date.
F2	The reported transactions involved an amendment of an outstanding stock option grant, resulting in the deemed cancellation of the old option and the grant of a replacement option. The option was originally granted on April 5, 2022, of which 19,525 shares vested, and the remainder of the options will vest in equal monthly installments such that on April 5, 2026, all shares subject to the option shall be vested, subject to Mr. Trainer's continued service on each vesting date.
F3	The reported transactions involved an amendment of an outstanding stock option grant, resulting in the deemed cancellation of the old option and the grant of a replacement option. The option was originally granted on February 11, 2021, of which 28,987 shares vested, and the remainder of the options will vest in equal monthly installments such that on February 11, 2025, all shares subject to the option shall be vested, subject to Mr. Trainer's continued service on each vesting date.
F4	The reported transactions involved an amendment of an outstanding stock option grant, resulting in the deemed cancellation of the old option and the grant of a replacement option. The option was originally granted on March 5, 2020, of which 130,401 shares vested, and the remainder of the options will vest in equal monthly installments such that on January 8, 2024, all shares subject to the option shall be vested, subject to Mr. Trainer's continued service on each vesting date. Mr. Trainer has exercised his right to purchase an aggregate of 61,769 shares subject to the original option.