Christian Vasquez - May 31, 2025 Form 4 Insider Report for BioAtla, Inc. (BCAB)

Role: Chief Accounting Officer, Corporate Controller and Secretary.
Signature: /s/ Christian Vasquez
Stock symbol: BCAB
Transactions as of: May 31, 2025
Transactions value $: -$640
Form type: 4
Date filed: 6/3/2025, 04:29 PM
Previous filing: Mar 13, 2025
Next filing: Sep 2, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Vasquez Christian	Chief Accounting Officer, Corporate Controller and Secretary.	C/O BIOATLA, INC. 11085 TORREYANA ROAD, SAN DIEGO	/s/ Christian Vasquez	2025-06-03	0001835732

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BCAB	Common Stock	Tax liability	-$640	-1.57K	-0.55%	$0.41	285K	May 31, 2025	Direct	F1, F2

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

Explanation of Responses:

Id	Content
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	Includes shares purchased under the Issuer's ESPP Plan.

Remarks:

Chief Accounting Officer, Corporate Controller and Secretary.