OABINasdaqServices-Commercial Physical & Biological ResearchFiscal year ends December 31Also trades as OABIW
OmniAb, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$4.69+0.10 (+2.18%)
Close on Oct 19, 2026
- Market cap
- $604.05M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
59M
Shares held, 13F filers
Institutional holders
132
20 new, 15 sold out
Net institutional buying
3M
In Q2 2026
Insider trades, 12 months
2 buys · 12 sales
Net sold $175.33K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 7,286,423 | 6.30% | 13G (passive) | Dec 31, 2023 |
| Thompson Dean (VOLUNTARY) | 27,248,304 | 21.10% | 13D (active) amendment | Jun 28, 2024 |
| Robert Goldstein | 12,291,972 | 8.50% | 13G (passive) amendment | Dec 31, 2025 |
| Joseph Kaplan | 10,248,658 | 7.10% | 13G (passive) amendment | Jun 30, 2026 |
| Whitefort Capital Management, LP | 10,240,146 | 8.40% | 13G (passive) amendment | Jun 30, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of OABI | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Whitefort Capital Management, LP | 10,248,658 | – | $25.21M | −3,975,000 | 6.21% |
| BlackRock, Inc. | 8,897,490 | – | $21.89M | +790,609 | 0.00% |
| Nomura Holdings Inc | 5,028,160 | – | $12.37M | +4,323,112 | 0.01% |
| Cadian Capital Management, LP | 4,211,821 | – | $10.36M | +54,692 | 0.78% |
| Vanguard Capital Management LLC | 3,852,356 | – | $9.48M | −141,296 | 0.00% |
| Geode Capital Management, LLC | 2,883,978 | – | $7.10M | −41,601 | 0.00% |
| Rice Hall James & Associates, LLC | 2,610,434 | – | $6.42M | +63,179 | 0.31% |
| Private Management Group Inc | 2,344,770 | – | $5.77M | −84,396 | 0.15% |
| State Street Corp | 2,133,549 | – | $5.25M | +66,406 | 0.00% |
| Dimensional Fund Advisors LP | 1,262,099 | – | $3.11M | −483,149 | 0.00% |
| Towerview LLC | 1,180,000 | – | $2.90M | +180,000 | 1.90% |
| Vanguard Portfolio Management LLC | 980,416 | – | $2.41M | +76,617 | 0.00% |
| Charles Schwab Investment Management Inc | 966,877 | – | $2.38M | +7,304 | 0.00% |
| Northern Trust Corp | 948,294 | – | $2.33M | +67,399 | 0.00% |
| ADAR1 Capital Management, LLC | 947,412 | – | $2.33M | +242,222 | 0.11% |
| Isthmus Partners, LLC | 803,428 | – | $1.98M | +46,754 | 0.19% |
| Vanguard Fiduciary Trust Co | 758,460 | – | $1.87M | +32,852 | 0.00% |
| Two Sigma Investments, LP | 657,432 | – | $1.62M | +144,691 | 0.00% |
| Nuveen, LLC | 642,811 | – | $1.58M | +18,935 | 0.00% |
| Renaissance Technologies LLC | 600,350 | – | $1.48M | +330,750 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 132 | 59M | 20 / 58 | 34 / 15 | 9M | 6M |
| Q1 2026 | 128 | 56M | 23 / 43 | 38 / 23 | 8M | 3M |
| Q4 2025 | 131 | 57M | 14 / 43 | 39 / 21 | 5M | 11M |
| Q3 2025 | 142 | 64M | 18 / 34 | 51 / 18 | 16M | 8M |
| Q2 2025 | 144 | 55M | 25 / 55 | 33 / 34 | 16M | 25M |
| Q1 2025 | 153 | 64M | 16 / 44 | 53 / 26 | 6M | 6M |
| Q4 2024 | 165 | 64M | 19 / 50 | 46 / 19 | 3M | 4M |
| Q3 2024 | 166 | 80M | 24 / 45 | 45 / 18 | 13M | 5M |
| Q2 2024 | 162 | 79M | 23 / 47 | 52 / 15 | 3M | 9M |
| Q1 2024 | 155 | 85M | 16 / 44 | 49 / 18 | 2M | 2M |
| Q4 2023 | 158 | 84M | 26 / 44 | 42 / 17 | 20M | 4M |
| Q3 2023 | 150 | 69M | 17 / 43 | 43 / 13 | 5M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of OABI | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Russell 2000 ETF | 2,795,038 | – | $6.88M | 0.01% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 2,379,734 | – | $5.85M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 1,390,197 | – | $3.42M | 0.00% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 1,197,251 | – | $2.37M | 0.01% | Jul 31, 2026 |
| iShares Russell 2000 Value ETF | 1,021,163 | – | $2.51M | 0.02% | Jun 30, 2026 |
| iShares Biotechnology ETF | 828,099 | – | $2.04M | 0.02% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 624,999 | – | $1.69M | 0.00% | May 31, 2026 |
| Vanguard Russell 2000 Index Fund | 572,106 | – | $1.54M | 0.01% | May 31, 2026 |
| Schwab U.S. Small-Cap ETF | 560,126 | – | $1.51M | 0.01% | May 31, 2026 |
| iShares Core S&P Small-Cap ETF | 450,637 | – | $5 | 0.00% | Jun 30, 2026 |
| iShares Core S&P Small-Cap ETF | 450,637 | – | $5 | 0.00% | Jun 30, 2026 |
| College Retirement Equities Fund - Total Global Stock Account | 437,156 | – | $1.08M | 0.00% | Jun 30, 2026 |
| iShares Micro-Cap ETF | 369,069 | – | $907.91K | 0.06% | Jun 30, 2026 |
| Janus Henderson Triton Fund | 340,494 | – | $820.28K | 0.01% | Jun 30, 2026 |
| Janus Henderson Triton Fund | 340,494 | – | $829.03K | 0.01% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| Matthew W. Foehr | President and CEO, Director | 4,439,736 | Apr 7, 2026 |
| Amechi Ekeke Nwachuku | Chief Operating Officer | – | Aug 3, 2026 |
| Kurt A. Gustafson | Executive VP, Finance and CFO | 261,483 | Apr 7, 2026 |
| Charles S. Berkman | Chief Legal Officer | 399,085 | Apr 7, 2026 |
| Philip J. Gotwals | Director | 33,333 | Jun 18, 2026 |
| John L. Higgins | Director | 2,962,320 | Jun 18, 2026 |
| Steven Love | Director | 91,666 | Jun 18, 2026 |
| Steven C. Crouse | Director | 33,333 | Jun 18, 2026 |
| Carolyn R. Bertozzi | Director | 113,308 | Jun 18, 2026 |
| Jennifer R. Cochran | Director | 185,274 | Jun 18, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Steven Love Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 91,666 |
| Philip J. Gotwals Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 33,333 |
| Steven C. Crouse Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 33,333 |
| Carolyn R. Bertozzi Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 113,308 |
| John L. Higgins Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 2,962,320 |
| Jennifer R. Cochran Director | Jun 17, 2026 | Option exercise | +20,000 | – | – | 185,274 |
| Steven C. Crouse Director | Apr 21, 2026 | Option exercise | +13,333 | – | – | 13,333 |
| Philip J. Gotwals Director | Apr 21, 2026 | Option exercise | +13,333 | – | – | 13,333 |
| Matthew W. Foehr President and CEO, Director | Apr 7, 2026 | Option exercise | +36,459 | – | – | 4,439,736 |
| Matthew W. Foehr President and CEO, Director | Apr 7, 2026 | Sale | −19,244 | $1.49 | $28.67K | 4,420,492 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 7, 2026 | Sale | −6,913 | $1.49 | $10.30K | 261,483 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 7, 2026 | Option exercise | +13,542 | – | – | 268,396 |
| Charles S. Berkman Chief Legal Officer | Apr 7, 2026 | Sale | −7,157 | $1.49 | $10.66K | 399,085 |
| Charles S. Berkman Chief Legal Officer | Apr 7, 2026 | Option exercise | +13,542 | – | – | 406,242 |
| Matthew W. Foehr President and CEO, Director | Feb 18, 2026 | Sale | −30,843 | $1.71 | $52.74K | 4,403,277 |
| Matthew W. Foehr President and CEO, Director | Feb 18, 2026 | Option exercise | +58,333 | – | – | 4,434,120 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Feb 18, 2026 | Option exercise | +18,750 | – | – | 278,152 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Feb 18, 2026 | Sale | −9,301 | $1.71 | $15.90K | 268,851 |
| Charles S. Berkman Chief Legal Officer | Feb 18, 2026 | Sale | −9,673 | $1.71 | $16.54K | 392,700 |
| Charles S. Berkman Chief Legal Officer | Feb 18, 2026 | Option exercise | +18,750 | – | – | 402,373 |
| Matthew W. Foehr President and CEO, Director | Feb 17, 2026 | Sale | −20,754 | $1.70 | $35.28K | 4,375,787 |
| Charles S. Berkman Chief Legal Officer | Feb 17, 2026 | Sale | −6,990 | $1.70 | $11.88K | 383,623 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Feb 17, 2026 | Sale | −6,828 | $1.70 | $11.61K | 259,402 |
| Matthew W. Foehr President and CEO, Director | Feb 16, 2026 | Option exercise | +36,458 | – | – | 4,396,541 |
| Charles S. Berkman Chief Legal Officer | Feb 16, 2026 | Option exercise | +13,542 | – | – | 390,613 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Feb 16, 2026 | Option exercise | +13,542 | – | – | 266,230 |
| John L. Higgins Director | Jan 30, 2026 | Option exercise | +13,172 | – | – | 2,942,320 |
| Charles S. Berkman Chief Legal Officer | Dec 8, 2025 | Sale | −8,044 | $1.96 | $15.77K | 377,071 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Dec 8, 2025 | Sale | −23,922 | $1.96 | $46.89K | 252,688 |
| Matthew W. Foehr President and CEO, Director | Dec 8, 2025 | Sale | −13,666 | $1.96 | $26.79K | 4,360,083 |
| Charles S. Berkman Chief Legal Officer | Dec 7, 2025 | Option exercise | +15,621 | – | – | 385,115 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Dec 7, 2025 | Option exercise | +46,500 | – | – | 276,610 |
| Matthew W. Foehr President and CEO, Director | Dec 7, 2025 | Option exercise | +26,554 | – | – | 4,373,749 |
| John L. Higgins Director | Nov 7, 2025 | Buy | +41,038 | $1.38 | $56.63K | 2,929,148 |
| John L. Higgins Director | Nov 6, 2025 | Buy | +36,223 | $1.41 | $51.07K | 2,888,110 |
| Steven Love Director | Nov 1, 2025 | Option exercise | +13,333 | – | – | 71,666 |
| Carolyn R. Bertozzi Director | Nov 1, 2025 | Option exercise | +17,769 | – | – | 93,308 |
| Matthew W. Foehr President and CEO, Director | Aug 26, 2025 | Award | +540,540 | $1.85 | $1,000.00K | 4,341,987 |
| John L. Higgins Director | Jun 17, 2025 | Option exercise | +20,000 | – | – | 2,851,887 |
| Carolyn R. Bertozzi Director | Jun 17, 2025 | Option exercise | +20,000 | – | – | 75,539 |
| Jennifer R. Cochran Director | Jun 17, 2025 | Option exercise | +20,000 | – | – | 165,274 |
| Steven Love Director | Jun 17, 2025 | Option exercise | +20,000 | – | – | 58,333 |
| Jennifer R. Cochran Director | May 15, 2025 | Buy | +30,000 | $1.52 | $45.60K | 145,274 |
| Steven Love Director | May 14, 2025 | Buy | +25,000 | $1.46 | $36.50K | 38,333 |
| John L. Higgins Director | May 12, 2025 | Buy | +65,000 | $1.44 | $93.60K | 2,831,887 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 7, 2025 | Option exercise | +13,542 | – | – | 231,034 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 7, 2025 | Sale | −7,206 | $2.00 | $14.41K | 223,828 |
| Matthew W. Foehr President and CEO, Director | Apr 7, 2025 | Sale | −19,382 | $2.00 | $38.76K | 3,796,236 |
| Matthew W. Foehr President and CEO, Director | Apr 7, 2025 | Option exercise | +36,458 | – | – | 3,815,618 |
| Charles S. Berkman Chief Legal Officer | Apr 7, 2025 | Option exercise | +13,542 | – | – | 370,418 |
| Charles S. Berkman Chief Legal Officer | Apr 7, 2025 | Sale | −7,206 | $2.00 | $14.41K | 363,212 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 1, 2025 | Sale | −11,963 | $2.37 | $28.35K | 217,492 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Apr 1, 2025 | Option exercise | +23,244 | – | – | 229,455 |
| John L. Higgins Director | Mar 21, 2025 | Buy | +4,000 | $2.28 | $9.12K | 2,766,887 |
| John L. Higgins Director | Mar 20, 2025 | Buy | +125,750 | $2.35 | $295.51K | 2,762,887 |
| Matthew W. Foehr President and CEO, Director | Feb 19, 2025 | Sale | −19,522 | $3.67 | $71.65K | 3,779,160 |
| Kurt A. Gustafson Executive VP, Finance and CFO | Feb 19, 2025 | Sale | −7,255 | $3.67 | $26.63K | 206,211 |
| Charles S. Berkman Chief Legal Officer | Feb 19, 2025 | Sale | −7,255 | $3.67 | $26.63K | 356,876 |
| Matthew W. Foehr President and CEO, Director | Feb 18, 2025 | Sale | −13,964 | $3.68 | $51.39K | 3,798,682 |
| Charles S. Berkman Chief Legal Officer | Feb 18, 2025 | Sale | −8,215 | $3.68 | $30.23K | 364,131 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Charles S. Berkman Officer | Apr 7, 2026 | 7,157 | $10.63K | Apr 7, 2026 | RESTRICTED STOCK |
| Matthew W. Foehr Officer | Apr 7, 2026 | 19,244 | $28.58K | Apr 7, 2026 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Apr 7, 2026 | 6,913 | $10.27K | Apr 7, 2026 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Feb 17, 2026 | 16,064 | $27.31K | Feb 17, 2026 | RESTRICTED STOCK |
| Charles S. Berkman Officer | Feb 17, 2026 | 16,432 | $27.93K | Feb 17, 2026 | RESTRICTED STOCK |
| Matthew W. Foehr Officer | Feb 17, 2026 | 50,934 | $86.59K | Feb 17, 2026 | RESTRICTED STOCK |
| Charles S. Berkman Officer | Dec 8, 2025 | 8,044 | $15.77K | Dec 8, 2025 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Dec 8, 2025 | 23,922 | $46.91K | Dec 8, 2025 | RESTRICTED STOCK |
| Matthew W. Foehr Officer | Dec 8, 2025 | 13,666 | $26.80K | Dec 8, 2025 | RESTRICTED STOCK |
| Charles S. Berkman Officer | Apr 7, 2025 | 7,206 | $14.40K | Apr 7, 2025 | RESTRICTED STOCK |
| Matthew W. Foehr Officer | Apr 7, 2025 | 19,382 | $38.71K | Apr 7, 2025 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Apr 7, 2025 | 7,206 | $14.40K | Apr 7, 2025 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Apr 1, 2025 | 11,963 | $28.35K | Apr 1, 2025 | RESTRICTED STOCK |
| Charles S. Berkman Officer | Feb 18, 2025 | 15,334 | $56.43K | Feb 18, 2025 | RESTRICTED STOCK |
| Kurt A. Gustafson Officer | Feb 18, 2025 | 5,188 | $19.09K | Feb 19, 2025 | RESTRICTED STOCK |