BioAtla, Inc. — Director's Dealing 2023

Mar 2, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BioAtla, Inc. (BCAB)
CIK: 0001826892
Period of Report: 2023-02-10

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
2023-02-28	Common Stock	F	2888	$2.89	Disposed	1371587	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-10	Employee Stock Option (right to buy)	$3.65	A	850000	Acquired	2033-02-10	Common Stock (850000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	793547	Indirect
Common Stock	258727	Indirect
Common Stock	258727	Indirect
Common Stock	302324	Indirect
Common Stock	50	Indirect

Footnotes

F1: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2: The Reporting Person and his spouse are the managers of Himalaya Parent LLC and collectively make investment decisions on the behalf of the entity. The Reporting Person and his spouse disclaim beneficial ownership of the reported securities except to the extent of his or her pecuniary interest therein.

F3: The option vests over a period of four years, with 25% of the shares underlying the option vesting on the first anniversary of the date of grant, and the remainder vesting in 36 substantially equal monthly installments thereafter, subject to the reporting person's continued service to the company through the applicable vesting dates.