BCAB Form 4: Steinman Adds 23.5k RSUs, Ownership Now 78.5k Shares

Rhea-AI Filing Summary

BioAtla, Inc. (BCAB) – Form 4 insider transaction

Director Lawrence Steinman reported the grant of 23,500 shares of common stock in the form of time-based restricted stock units (RSUs) on 18 June 2025. The RSUs will vest 100% on the earlier of (i) 18 June 2026 or (ii) the next annual meeting of stockholders, conditional upon his continued board service.

• Transaction code: A (award)
• Transaction price: $0 (equity award, not a market purchase)
• Post-transaction direct ownership: 78,459 common shares

No derivative securities were reported. The filing indicates routine board compensation designed to align director incentives with shareholder interests and does not signal any open-market buying or selling by the insider.

Positive

• Director ownership increases to 78,459 shares, modestly tightening management-shareholder alignment

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine RSU grant increases director alignment; immaterial to valuation.

The single RSU award is standard annual board compensation. Vesting in one year, contingent on service, supports long-term alignment without immediate cash outlay. The director now holds 78,459 shares, a modest stake that reinforces commitment but poses negligible dilution. No red flags or unusual structures observed.

Securities Analyst

TL;DR: Neutral market impact; no open-market purchase or sale.

Because the shares are awarded at $0 and represent a small fraction of BioAtla’s outstanding float, the transaction is not expected to influence trading dynamics or valuation. Investors may view the continued accumulation as a mild positive signal, yet the absence of cash investment limits interpretive weight.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider STEINMAN LAWRENCE

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	23,500	$0.00	--

Holdings After Transaction: Common Stock — 78,459 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

STEINMAN LAWRENCE

(Last) (First) (Middle)

C/O BIOATLA, INC. 11085 TORREYANA ROAD

(Street)

SAN DIEGO CA 92121

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BioAtla, Inc. [ BCAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/18/2025		A		23,500(1)	A	$0	78,459	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares of Common Stock underlying a time-based restricted stock unit award ("RSU"). The RSU will vest as to 100% of the total number of shares on the earlier of (i) June 18, 2026, or (ii) the next Company annual meeting of stockholders, subject to the reporting person's continued service through the vesting date.

	/s/ Christian Vasquez, as Attorney-in-Fact for Lawrence Steinman	06/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many BioAtla (BCAB) shares did Lawrence Steinman acquire?

He was granted 23,500 restricted stock units representing the same number of common shares.

When will the RSUs granted to Steinman vest?

The RSUs vest 100% on the earlier of 18 Jun 2026 or the next annual meeting, subject to continued service.

What is Steinman’s total BioAtla share ownership after the transaction?

Following the award, he directly owns 78,459 common shares.

Was there any cash paid for the shares in this Form 4 filing?

No. The RSUs were awarded at $0 as part of director compensation; no market purchase occurred.

Did the filing disclose any derivative securities for Steinman?

No derivative securities were reported in Table II.