Tito Serafini - Sep 2, 2022 Form 4 Insider Report for Atreca, Inc. (BCEL)

Role: Chief Strategy Officer, Director
Signature: /s/ Courtney J. Phillips, Attorney-In-Fact
Stock symbol: BCEL
Transactions as of: Sep 2, 2022
Transactions value $: -$13,573
Form type: 4
Date filed: 9/20/2022, 06:13 PM
Previous filing: Jun 30, 2022
Next filing: Feb 13, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BCEL	Class A Common Stock	Sale	-$13.6K	-7.65K	-18.12%	$1.78	34.6K	Sep 2, 2022	Direct	F1, F2
holding	BCEL	Class A Common Stock						50K	Sep 2, 2022	By the Serafini/Postner Irrevocable Remainder Trust
holding	BCEL	Class A Common Stock						229K	Sep 2, 2022	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	Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" and does not represent a discretionary trade by the Reporting Person.
F2	The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.74 to $1.83 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Content

Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" and does not represent a discretionary trade by the Reporting Person.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.74 to $1.83 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.