Quick Takeaways
- BCAB - BioAtla, Inc. has 12 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 12 Insiders of BioAtla, Inc.
- Symbol
- BCAB on Nasdaq
- Location
- San Diego, CA
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 05 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
BioAtla, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Guy Levy | Former Director | $2,781,493 | Mixed | 16 Jun 2022 | ||
| Jay M. Short PhD | Chief Executive Officer, Director | $769,133 | Mixed | 11 Mar 2026 | ||
| Scott Andrew Smith | Director | $125,404 | Mixed | 18 Jun 2025 | ||
| Eric Sievers | Chief Medical Officer | $107,766 | Mixed | 10 Mar 2026 | ||
| Christian Vasquez | Chief Financial Officer | $95,435 | Mixed | 10 Mar 2026 | ||
| Richard A. Waldron | Former Chief Financial Officer | $84,824 | Mixed | 28 Feb 2026 | ||
| Lawrence Steinman | Director | $30,599 | Mixed | 18 Jun 2025 | ||
| Mary Ann Gray | Director | $30,184 | Mixed | 18 Jun 2025 | ||
| Eddie Williams | Director | $23,478 | Mixed | 18 Jun 2025 | ||
| Sylvia McBrinn | Director | $23,058 | Mixed | 18 Jun 2025 | ||
| Susan Moran | Director | $20,399 | Mixed | 18 Jun 2025 | ||
| Himalaya Parent LLC | 10%+ Owner | $123 | Mixed | 14 Jun 2021 |
Top shareholders of BioAtla, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Guy Levy |
3/4/5
|
Former Director |
—
class O/S missing
|
1,130,688
|
$2,781,493 | — | 16 Jun 2022 | |
| ACORN CAPITAL ADVISORS, LLC |
13F
|
Company |
8.3%
|
4,835,111
|
$2,756,013 | — | 31 Dec 2025 | |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC |
13D/G
|
— |
7.7%
|
4,839,579
|
$2,129,415 | -$1,104,235 | 31 Mar 2025 | |
| ACORN BIOVENTURES, L.P. |
13D/G
|
Anders Hove |
8.3%
|
4,835,111
|
$2,127,449 | $0 | 15 May 2025 | |
| OPOKA INVESTMENT FUND Co |
13D/G
|
— |
4.8%
|
2,810,331
|
$1,933,227 | -$507,296 | 09 Jul 2025 | |
| Jay M. Short PhD |
13D/G
3/4/5
|
Jay M. Short · Chief Executive Officer, Director |
6.6%
|
3,865,646
|
$1,700,884 | $0 | 31 Dec 2024 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.3%
|
1,945,795
|
$1,105,212 | — | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
1.5%
|
891,580
|
$508,201 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13D/G
13F
|
Company |
1.9%
|
1,095,606
|
$482,067 | $0 | 31 Dec 2024 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.3%
|
757,671
|
$429,000 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.2%
|
707,214
|
$401,485 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.9%
|
525,353
|
$299,451 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.85%
|
500,328
|
$284,096 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.82%
|
480,933
|
$273,026 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.59%
|
346,774
|
$196,863 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.39%
|
225,684
|
$128,188 | — | 31 Dec 2025 | |
| Scott Andrew Smith |
3/4/5
|
Director |
0.55%
|
321,550
|
$125,404 | — | 18 Jun 2025 | |
| Eric Sievers |
3/4/5
|
Chief Medical Officer |
1%
|
598,705
|
$107,766 | — | 10 Mar 2026 | |
| ADAR1 Capital Management, LLC |
13F
|
Company |
0.31%
|
183,107
|
$103,950 | — | 31 Dec 2025 | |
| Christian Vasquez |
3/4/5
|
Chief Financial Officer |
0.91%
|
530,196
|
$95,435 | — | 10 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
0.26%
|
151,377
|
$85,937 | — | 31 Dec 2025 | |
| Richard A. Waldron |
3/4/5
|
Former Chief Financial Officer |
0.59%
|
343,421
|
$84,824 | — | 28 Feb 2026 | |
| SIMPLEX TRADING, LLC |
13F
|
Company |
0.21%
|
120,391
|
$68,382 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.18%
|
103,494
|
$58,754 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.14%
|
81,687
|
$46,373 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.14%
|
81,330
|
$46,171 | — | 31 Dec 2025 | |
| PVG ASSET MANAGEMENT CORP |
13F
|
Company |
0.12%
|
69,000
|
$39,171 | — | 31 Dec 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.1%
|
60,395
|
$34,286 | — | 31 Dec 2025 | |
| Virtu Financial LLC |
13F
|
Company |
0.09%
|
55,460
|
$31,000 | — | 31 Dec 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.09%
|
54,742
|
$31,000 | — | 31 Dec 2025 | |
| Lawrence Steinman |
3/4/5
|
Director |
0.13%
|
78,459
|
$30,599 | — | 18 Jun 2025 | |
| Mary Ann Gray |
3/4/5
|
Director |
0.13%
|
77,397
|
$30,184 | — | 18 Jun 2025 | |
| MAI Capital Management |
13F
|
Company |
0.09%
|
51,504
|
$29,239 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.07%
|
43,653
|
$24,781 | — | 31 Dec 2025 | |
| Eddie Williams |
3/4/5
|
Director |
0.1%
|
60,200
|
$23,478 | — | 18 Jun 2025 | |
| Sylvia McBrinn |
3/4/5
|
Director |
0.1%
|
59,125
|
$23,058 | — | 18 Jun 2025 | |
| Susan Moran |
3/4/5
|
Director |
0.09%
|
52,307
|
$20,399 | — | 18 Jun 2025 | |
| COLUMBIA ADVISORY PARTNERS LLC |
13F
|
Company |
0.04%
|
26,070
|
$14,800 | — | 31 Dec 2025 | |
| COMMONWEALTH EQUITY SERVICES, LLC |
13F
|
Company |
0.04%
|
25,300
|
$14,360 | — | 31 Dec 2025 | |
| Magnus Financial Group LLC |
13F
|
Company |
0.03%
|
20,000
|
$11,354 | — | 31 Dec 2025 | |
| Torrey Growth & Income Advisors |
13F
|
Company |
0.03%
|
15,687
|
$8,942 | — | 31 Dec 2025 | |
| Global Wealth Strategies & Associates |
13F
|
Company |
0.02%
|
13,769
|
$7,817 | — | 31 Dec 2025 | |
| HighTower Advisors, LLC |
13F
|
Company |
0.02%
|
13,000
|
$7,380 | — | 31 Dec 2025 | |
| Twin Lakes Capital Management, LLC |
13F
|
Company |
0.02%
|
9,000
|
$5,109 | — | 31 Dec 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0.02%
|
8,790
|
$4,990 | — | 31 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.01%
|
5,318
|
$3,019 | — | 31 Dec 2025 | |
| JONES FINANCIAL COMPANIES LLLP |
13F
|
Company |
0%
|
2,000
|
$1,134 | — | 31 Dec 2025 | |
| ARCADIA INVESTMENT MANAGEMENT CORP/MI |
13F
|
Company |
0%
|
1,403
|
$797 | — | 31 Dec 2025 | |
| CIBC Private Wealth Group LLC |
13F
|
Company |
0%
|
1,290
|
$732 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0%
|
500
|
$285 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for BioAtla, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jay M. Short PhD | BCAB | Common Stock | Award | 19.3% | 430,000 | 2,659,603 | 11 Mar 2026 | Direct | ||
| Eric Sievers | BCAB | Common Stock | Award | 66.9% | 240,000 | 598,705 | 10 Mar 2026 | Direct | ||
| Christian Vasquez | BCAB | Common Stock | Award | 82.7% | 240,000 | 530,196 | 10 Mar 2026 | Direct | ||
| Jay M. Short PhD | BCAB | Common Stock | Tax liability | -0.35% | -7,728 | 2,229,603 | 28 Feb 2026 | Direct | ||
| Christian Vasquez | BCAB | Common Stock | Tax liability | -0.62% | -1,802 | 290,196 | 28 Feb 2026 | Direct | ||
| Richard A. Waldron | BCAB | Common Stock | Tax liability | -0.79% | -2,729 | 343,421 | 28 Feb 2026 | Direct | ||
| Eric Sievers | BCAB | Common Stock | Tax liability | -0.87% | -3,140 | 358,705 | 28 Feb 2026 | Direct | ||
| Richard A. Waldron | BCAB | Common Stock | Tax liability | -0.68% | -2,371 | 346,150 | 30 Nov 2025 | Direct | ||
| Eric Sievers | BCAB | Common Stock | Tax liability | -0.75% | -2,729 | 361,845 | 30 Nov 2025 | Direct | ||
| Jay M. Short PhD | BCAB | Common Stock | Tax liability | -0.28% | -6,347 | 2,237,331 | 30 Nov 2025 | Direct | ||
| Christian Vasquez | BCAB | Common Stock | Tax liability | -0.53% | -1,566 | 291,998 | 30 Nov 2025 | Direct | ||
| Jay M. Short PhD | BCAB | Common Stock | Tax liability | -0.28% | -6,347 | 2,243,678 | 31 Aug 2025 | Direct | ||
| Christian Vasquez | BCAB | Common Stock | Tax liability | -0.55% | -1,566 | 283,564 | 31 Aug 2025 | Direct | ||
| Eric Sievers | BCAB | Common Stock | Tax liability | -0.74% | -2,729 | 364,574 | 31 Aug 2025 | Direct | ||
| Richard A. Waldron | BCAB | Common Stock | Tax liability | -0.7% | -2,371 | 338,521 | 31 Aug 2025 | Direct | ||
| Susan Moran | BCAB | Common Stock | Award | 81.6% | 23,500 | 52,307 | 18 Jun 2025 | Direct | ||
| Eddie Williams | BCAB | Common Stock | Award | 64% | 23,500 | 60,200 | 18 Jun 2025 | Direct | ||
| Lawrence Steinman | BCAB | Common Stock | Award | 42.8% | 23,500 | 78,459 | 18 Jun 2025 | Direct | ||
| Mary Ann Gray | BCAB | Common Stock | Award | 43.6% | 23,500 | 77,397 | 18 Jun 2025 | Direct | ||
| Sylvia McBrinn | BCAB | Common Stock | Award | 66% | 23,500 | 59,125 | 18 Jun 2025 | Direct | ||
| Scott Andrew Smith | BCAB | Common Stock | Award | 7.88% | 23,500 | 321,550 | 18 Jun 2025 | Direct | ||
| Jay M. Short PhD | BCAB | Common Stock | Tax liability | -0.28% | -6,347 | 2,250,025 | 31 May 2025 | Direct | ||
| Eric Sievers | BCAB | Common Stock | Tax liability | -0.74% | -2,729 | 367,303 | 31 May 2025 | Direct | ||
| Richard A. Waldron | BCAB | Common Stock | Tax liability | -0.69% | -2,371 | 340,892 | 31 May 2025 | Direct | ||
| Christian Vasquez | BCAB | Common Stock | Tax liability | -0.55% | -1,566 | 285,130 | 31 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.