Form4insider filings, from the source

Company · CIK 0001826892 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

BioAtla, Inc. · BCAB

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 31, 2026 FForm 4 →Sep 2, 5:28 pm EDTEric SieversChief Medical Officer134$1.69$22611,346—
Aug 31, 2026 FForm 4 →Sep 2, 5:27 pm EDTJay M Short Ph.D.Chief Executive Officer, Director259$1.69$43852,035—
Aug 31, 2026 FForm 4 →Sep 2, 5:26 pm EDTChristian VasquezChief Financial Officer71$1.69$12010,476—
Mar 12, 2026 FForm 4 →Jun 5, 4:30 pm EDTJay M Short Ph.D.Chief Executive Officer, Director898$1.25$1,12552,294— late
Mar 11, 2026 FForm 4 →Jun 5, 4:30 pm EDTChristian VasquezChief Financial Officer257$1.37$35210,347— late
Mar 11, 2026 FForm 4 →Jun 5, 4:30 pm EDTEric SieversChief Medical Officer494$1.19$58711,840— late

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.