BioAtla CEO reports tax-withholding share disposition
BioAtla, Inc. director and Chief Executive Officer Jay M. Short reported routine tax-related share dispositions rather than open-market sales.
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Form Type
4
Rhea-AI Filing Summary
BioAtla, Inc. director and Chief Executive Officer Jay M. Short reported routine tax-related share dispositions rather than open-market sales. On March 12, 2026 and May 31, 2026, a total of 898 shares of common stock were withheld by the company to cover income tax obligations tied to vesting restricted stock units.
After the most recent withholding of 259 shares at $3.93 per share, Short directly holds 52,294 common shares, with additional indirect holdings through entities and a spouse. Reported amounts reflect a 50-for-1 share consolidation of BioAtla common stock effective on April 6, 2026.
Insider Trade Summary
Exercise Price or Tax Liability: 898 shares
Exercise Price or Tax Liability
7 txns
Insider
SHORT JAY M PHD
Role
Chief Executive Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise Price or Tax Liability | Common Stock | 259 | $3.93 | $1K |
| Exercise Price or Tax Liability | Common Stock | 639 | $0.168 | $107.35 |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 52,294 shares (Direct);
Common Stock — 15,870 shares (Indirect, By Spouse);
Common Stock — 5,174 shares (Indirect, By Carolyn Short 2020 Irrevocable Gift Trust);
Common Stock — 5,174 shares (Indirect, By Jay Short 2020 Irrevocable Gift Trust);
Common Stock — 6,046 shares (Indirect, By Capia IP, LLC);
Common Stock — 1 shares (Indirect, By Himalaya Parent LLC)
Footnotes (3)
- 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. Effective on April 6, 2026, the Issuer effected a 50-for-1 share consolidation of its common stock (the "Share Consolidation"). The amount of securities reported on this Form 4 has been adjusted to reflect the Share Consolidation.
- F3. 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.
Key Figures
Tax-withheld shares (total): 898 shares
Tax-withheld shares (May 31, 2026): 259 shares at $3.93/share
Tax-withheld shares (Mar 12, 2026): 639 shares at $0.168/share
+4 more
7 metrics
Tax-withheld shares (total)
898 shares
Shares withheld to satisfy tax obligations on RSU vesting
Tax-withheld shares (May 31, 2026)
259 shares at $3.93/share
Common stock withheld for income tax obligations
Tax-withheld shares (Mar 12, 2026)
639 shares at $0.168/share
Common stock withheld for income tax obligations
Direct holdings after latest transaction
52,294 shares
Common stock directly held by CEO after May 31, 2026
Indirect holding via Capia IP, LLC
6,046 shares
Common stock held indirectly through Capia IP, LLC
Indirect holding via spouse
15,870 shares
Common stock held indirectly by spouse
Share consolidation ratio
50-for-1
BioAtla common stock share consolidation effective April 6, 2026
Key Terms
tax-withholding disposition, restricted stock units, share consolidation, beneficial ownership, +1 more
5 terms
tax-withholding disposition financial
"transaction_action: tax-withholding disposition"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
restricted stock units financial
"in connection with the vesting and net settlement of previously reported restricted stock units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
beneficial ownership financial
"disclaim beneficial ownership of the reported securities except to the extent of his or her pecuniary interest"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of his or her pecuniary interest therein"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transaction did BioAtla (BCAB) CEO Jay M. Short report?
Jay M. Short reported tax-withholding dispositions, not open-market sales. BioAtla withheld 898 common shares in total to satisfy income tax obligations when previously granted restricted stock units vested and were settled in stock for the CEO.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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