BioAtla, Inc. — Director's Dealing 2021

Aug 26, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BioAtla, Inc. (BCAB)
CIK: 0001826892
Period of Report: 2021-08-24

Reporting Person: SHORT JAY M PHD (Director, Chief Executive Officer, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-24	Common Stock	M	7747	$18.00	Acquired	798080	Indirect
2021-08-24	Common Stock	S	4533	$41.60	Disposed	793547	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-24	Employee Stock Option (right to buy)	$18.00	M	7747	Disposed	2030-12-15	Common Stock (7747)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	258727	Indirect
Common Stock	1441508	Direct
Common Stock	258727	Indirect
Common Stock	302324	Indirect

Footnotes

F1: Shares sold by the Reporting Person's spouse in payment of the aggregate option exercise price and withholding tax liability incurred upon the above-reported exercise of Option.

F2: The option grant was reported by the Reporting Person's spouse on her Form 4 filed with the SEC on December 17, 2020.

F3: The Option is fully vested.