BioAtla, Inc. (BCAB) Insider Ownership

Historic Insider Ownership Trends

BCAB's three largest insider shareholders as of March 23, 2026 are Jay M Phd Short (Chief Executive Officer, 2.23Mn 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
Jay M Phd Short Chief Executive Officer 2,659,603 0 12 Mar, 2026
Guy Levy 0 1,115,817 30 Sep, 2021
Jay M Phd Short Chief Executive Officer 0 793,547 25 Aug, 2021
Eric Sievers Chief Medical Officer 598,705 0 12 Mar, 2026
Christian Vasquez Chief Financial Officer 530,196 0 12 Mar, 2026
Richard A Waldron Former Chief Financial Officer 343,421 0 02 Mar, 2026
Scott Andrew Smith 321,550 0 18 Jun, 2025
Lawrence Steinman 78,459 0 18 Jun, 2025
Mary Ann Gray 77,397 0 18 Jun, 2025
Eddie Williams 60,200 0 18 Jun, 2025
Sylvia Mcbrinn 59,125 0 18 Jun, 2025
Susan Moran 52,307 0 18 Jun, 2025

* 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
10 Mar, 2026 Christian Vasquez Common Stock A 240,000 $0.00 530,196 D A
11 Mar, 2026 Jay M Phd Short Common Stock A 430,000 $0.00 2,659,603 D A
10 Mar, 2026 Eric Sievers Common Stock A 240,000 $0.00 598,705 D A
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
28 Feb, 2026 Eric Sievers Common Stock D 3,140 $0.25 358,705 D F
30 Nov, 2025 Richard A Waldron Common Stock D 2,371 $0.90 346,150 D F
30 Nov, 2025 Christian Vasquez Common Stock D 1,566 $0.90 291,998 D F
30 Nov, 2025 Eric Sievers Common Stock D 2,729 $0.90 361,845 D F
30 Nov, 2025 Jay M Phd Short Common Stock D 6,347 $0.90 2,237,331 D F
31 Aug, 2025 Richard A Waldron Common Stock D 2,371 $0.46 338,521 D F
31 Aug, 2025 Eric Sievers Common Stock D 2,729 $0.46 364,574 D F
31 Aug, 2025 Christian Vasquez Common Stock D 1,566 $0.46 283,564 D F
31 Aug, 2025 Jay M Phd Short Common Stock D 6,347 $0.46 2,243,678 D F
18 Jun, 2025 Sylvia Mcbrinn Common Stock A 23,500 $0.00 59,125 D A
18 Jun, 2025 Lawrence Steinman Common Stock A 23,500 $0.00 78,459 D A
18 Jun, 2025 Eddie Williams Common Stock A 23,500 $0.00 60,200 D A
18 Jun, 2025 Mary Ann Gray Common Stock A 23,500 $0.00 77,397 D A
18 Jun, 2025 Susan Moran Common Stock A 23,500 $0.00 52,307 D A