BioAtla, Inc. (BCAB) has 13 known insider and institutional holders on record. The largest holder is SHORT JAY M PHD with 2,659,603 shares. Other notable holders include Levy Guy and Sievers Eric.
Over the last 12 months, insiders have made 25 transactions in BCAB stock — 9 buys (valued at RSU Award) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
BCAB Insider Ownership
Top Holder
SHORT JAY M PHD
2,659,603 shares
Buys (12 mo)
9
$0.00 value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Short Jay M Phd |
Chief Executive Officer |
2,659,603 |
2026-03-12 |
|
| 2 |
Levy Guy |
Director |
1,115,817 |
2021-09-30 |
|
| 3 |
Sievers Eric |
Chief Medical Officer |
598,705 |
2026-03-12 |
|
| 4 |
Vasquez Christian |
Chief Financial Officer |
530,196 |
2026-03-12 |
|
| 5 |
Waldron Richard A |
Former Chief Financial Officer |
343,421 |
2026-03-02 |
|
| 6 |
Smith Scott Andrew |
Director |
321,550 |
2025-06-18 |
|
| 7 |
Steinman Lawrence |
Director |
78,459 |
2025-06-18 |
|
| 8 |
Gray Mary Ann |
Director |
77,397 |
2025-06-18 |
|
| 9 |
Williams Eddie |
Director |
60,200 |
2025-06-18 |
|
| 10 |
Mcbrinn Sylvia |
Director |
59,125 |
2025-06-18 |
|
| 11 |
Moran Susan |
Director |
52,307 |
2025-06-18 |
|
| 12 |
Short Carolyn Anderson |
10 Percent Owner, Officer: See Remarks |
7,747 |
2020-12-17 |
|
| 13 |
Himalaya Parent Llc |
10 Percent Owner |
50 |
2022-06-03 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-10 |
Vasquez Christian |
Chief Financial Officer |
RSU Award |
240,000 |
- |
- |
| 2026-03-10 |
Sievers Eric |
Chief Medical Officer |
RSU Award |
240,000 |
- |
- |
| 2026-03-11 |
Short Jay M Phd |
Chief Executive Officer |
RSU Award |
430,000 |
- |
- |
| 2026-02-28 |
Vasquez Christian |
Chief Financial Officer |
Tax Withholding of RSU |
1,802 |
$0.25 |
$445.09 |
| 2026-02-28 |
Sievers Eric |
Chief Medical Officer |
Tax Withholding of RSU |
3,140 |
$0.25 |
$775.58 |
| 2026-02-28 |
Waldron Richard A |
Former Chief Financial Officer |
Tax Withholding of RSU |
2,729 |
$0.25 |
$674.06 |
| 2026-02-28 |
Short Jay M Phd |
Chief Executive Officer |
Tax Withholding of RSU |
7,728 |
$0.25 |
$1.91K |
| 2025-11-30 |
Vasquez Christian |
See Remarks |
Tax Withholding of RSU |
1,566 |
$0.90 |
$1.42K |
| 2025-11-30 |
Sievers Eric |
Chief Medical Officer |
Tax Withholding of RSU |
2,729 |
$0.90 |
$2.47K |
| 2025-11-30 |
Waldron Richard A |
Chief Financial Officer |
Tax Withholding of RSU |
2,371 |
$0.90 |
$2.14K |
| 2025-11-30 |
Short Jay M Phd |
10 Percent Owner, Officer: Chief Executive Officer |
Tax Withholding of RSU |
6,347 |
$0.90 |
$5.74K |
| 2025-08-31 |
Vasquez Christian |
See Remarks |
Tax Withholding of RSU |
1,566 |
$0.46 |
$713.31 |
| 2025-08-31 |
Sievers Eric |
Chief Medical Officer |
Tax Withholding of RSU |
2,729 |
$0.46 |
$1.24K |
| 2025-08-31 |
Waldron Richard A |
Chief Financial Officer |
Tax Withholding of RSU |
2,371 |
$0.46 |
$1.08K |
| 2025-08-31 |
Short Jay M Phd |
10 Percent Owner, Officer: Chief Executive Officer |
Tax Withholding of RSU |
6,347 |
$0.46 |
$2.89K |
| 2025-06-18 |
Moran Susan |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-06-18 |
Williams Eddie |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-06-18 |
Smith Scott Andrew |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-06-18 |
Mcbrinn Sylvia |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-06-18 |
Gray Mary Ann |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-06-18 |
Steinman Lawrence |
Director |
RSU Award |
23,500 |
- |
- |
| 2025-05-31 |
Vasquez Christian |
See Remarks |
Tax Withholding of RSU |
1,566 |
$0.41 |
$640.49 |
| 2025-05-31 |
Sievers Eric |
Chief Medical Officer |
Tax Withholding of RSU |
2,729 |
$0.41 |
$1.12K |
| 2025-05-31 |
Waldron Richard A |
Chief Financial Officer |
Tax Withholding of RSU |
2,371 |
$0.41 |
$969.74 |
| 2025-05-31 |
Short Jay M Phd |
10 Percent Owner, Officer: Chief Executive Officer |
Tax Withholding of RSU |
6,347 |
$0.41 |
$2.6K |