Tito Serafini - Sep 9, 2021 Form 4 Insider Report for Atreca, Inc. (BCEL)

Role: Chief Strategy Officer, Director
Signature: /s/ Courtney Phillips, Attorney-In-Fact
Stock symbol: BCEL
Transactions as of: Sep 9, 2021
Transactions value $: $0
Form type: 4
Date filed: 9/13/2021, 09:42 PM
Next filing: Sep 28, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BCEL	Class A Common Stock	Award	$0	+42.2K		$0.00	42.2K	Sep 9, 2021	Direct	F1
holding	BCEL	Class A Common Stock						354K	Sep 9, 2021	By the Serafini/Postner Revocable Trust

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

Explanation of Responses:

Id	Content
F1	The shares of common stock are to be acquired upon the vesting of a restricted stock unit award granted to the Reporting Person. The restricted stock unit award shall vest as follows: vest over two years (vesting commencement date = September 1, 2021), with a one-year cliff as follows: on the first anniversary of the vesting commencement date, 50% of the restricted stock unit award shall vest, and on the second anniversary of the vesting commencement date, 50% of the restricted stock unit award shall vest. In total, 100% of the restricted stock unit award shall be vested on the second anniversary of the vesting commencement date.

Content

The shares of common stock are to be acquired upon the vesting of a restricted stock unit award granted to the Reporting Person. The restricted stock unit award shall vest as follows: vest over two years (vesting commencement date = September 1, 2021), with a one-year cliff as follows: on the first anniversary of the vesting commencement date, 50% of the restricted stock unit award shall vest, and on the second anniversary of the vesting commencement date, 50% of the restricted stock unit award shall vest. In total, 100% of the restricted stock unit award shall be vested on the second anniversary of the vesting commencement date.