BioAtla, Inc. (BCAB) Insider Ownership

Historic Insider Ownership Trends

As of July 26, 2026, the three largest insider holders of BCAB are Jay M Phd Short (Chief Executive Officer, 2.66Mn shares), Guy Levy (Director, 1.12Mn shares), Jay M Phd Short (Chief Executive Officer, 793.55K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Lawrence Steinman - 78,459 0 18 Jun, 2025
Jay M Phd Short Chief Executive Officer 2,659,603 0 12 Mar, 2026
Richard A Waldron Former Chief Financial Officer 343,421 0 02 Mar, 2026
Mary Ann Gray - 77,397 0 18 Jun, 2025
Sylvia Mcbrinn - 59,125 0 18 Jun, 2025
Scott Andrew Smith Former President 321,550 0 18 Jun, 2025
Eddie Williams - 60,200 0 18 Jun, 2025
Guy Levy - 0 1,115,817 30 Sep, 2021
Eric Sievers Chief Medical Officer 598,705 0 12 Mar, 2026
Susan Moran - 52,307 0 18 Jun, 2025
Christian Vasquez Chief Financial Officer 530,196 0 12 Mar, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Mar, 2026 Jay M Phd Short Common Stock A 430,000 $0.00 2,659,603 D A
10 Mar, 2026 Christian Vasquez Common Stock A 240,000 $0.00 530,196 D A
10 Mar, 2026 Christian Vasquez Common Stock A 240,000 $0.00 530,196 D A
10 Mar, 2026 Eric Sievers Common Stock A 240,000 $0.00 598,705 D A
10 Mar, 2026 Eric Sievers Common Stock A 240,000 $0.00 598,705 D A
11 Mar, 2026 Jay M Phd Short Common Stock A 430,000 $0.00 2,659,603 D A
10 Mar, 2026 Christian Vasquez Common Stock A 240,000 $0.00 530,196 D A
10 Mar, 2026 Eric Sievers Common Stock A 240,000 $0.00 598,705 D A
11 Mar, 2026 Jay M Phd Short Common Stock A 430,000 $0.00 2,659,603 D A
28 Feb, 2026 Richard A Waldron Common Stock D 2,729 $0.25 343,421 D F
28 Feb, 2026 Jay M Phd Short Common Stock D 7,728 $0.25 2,229,603 D F
28 Feb, 2026 Christian Vasquez Common Stock D 1,802 $0.25 290,196 D F
28 Feb, 2026 Eric Sievers Common Stock D 3,140 $0.25 358,705 D F
28 Feb, 2026 Eric Sievers Common Stock D 3,140 $0.25 358,705 D F
28 Feb, 2026 Eric Sievers Common Stock D 3,140 $0.25 358,705 D F
28 Feb, 2026 Richard A Waldron Common Stock D 2,729 $0.25 343,421 D F
28 Feb, 2026 Christian Vasquez Common Stock D 1,802 $0.25 290,196 D F
28 Feb, 2026 Christian Vasquez Common Stock D 1,802 $0.25 290,196 D F
28 Feb, 2026 Jay M Phd Short Common Stock D 7,728 $0.25 2,229,603 D F
28 Feb, 2026 Richard A Waldron Common Stock D 2,729 $0.25 343,421 D F