AbCellera Biologics
Discovers antibodies for partners and advances its own clinical candidates.
$11.37
After-hours close+0.03 (+0.24%)
At close$11.35(−8.51%)
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Breakdown13F · Form 4
Institutions 40.70%124.28M sharesInsiders 0.96%2.94M sharesOther 58.34%178.15M shares
Shares outstanding 305.38M · Float 205.09M · 67.2% free float
Institutions13F, as of Mar 31, 2026
152 holders · 124.28M shares · 20 new positions · 76 increased · 33 reduced · 26 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Baker Bros. Advisors LP | 30.28M | 9.91% | +2.75M | May 15, 2026 |
| Capital World Investors | 13.36M | 4.38% | 0 | May 13, 2026 |
| Two Sigma Investments, LP | 10.56M | 3.46% | +4.75M | May 15, 2026 |
| TD Waterhouse Canada Inc. | 9.56M | 3.13% | +9.54M | May 12, 2026 |
| UBS Asset Management Americas Inc | 7.58M | 2.48% | −301.2K | May 13, 2026 |
| UBS Group AG | 4.21M | 1.38% | +2.27M | May 5, 2026 |
| Arrowmark Colorado Holdings LLC | 4.11M | 1.34% | 0 | May 15, 2026 |
| BlackRock, Inc. | 4.04M | 1.32% | +174.3K | May 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Baker Bros. Advisors LP | 10.80% | 33.01M | 13G | May 7, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Thermopylae Holdings Ltd. | 10 percent owner | 56.13M | 18.38% | Mar 2, 2026 |
| Michael R. Hayden | director | 1.37M | 0.45% | Aug 24, 2026 |
| Stephen Quake | director | 836.1K | 0.27% | Dec 19, 2025 |
| Andrew Booth | officer: Chief Financial Officer | 482.8K | 0.16% | Aug 14, 2026 |
| John S. Montalbano | director | 251.0K | 0.08% | Aug 18, 2026 |
2 ten-percent owners hold 56.21M shares by Form 4, outside the officers-and-directors figure above · 6 people have not refiled in the last 18 months (4.05M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 24, 2026 | Michael R. Haydendirector | Purchase | 53,613 | $10.64 | 1,373,397 |
| Aug 18, 2026 | John S. Montalbanodirector | Purchase | 10,000 | $11.03 | 251,000 |
| Aug 14, 2026 | Andrew Boothofficer: Chief Financial Officer | Purchase | 37,200 | $10.32 | 482,800 |
| Aug 12, 2026 | Michael R. Haydendirector | Purchase | 46,387 | $10.37 | 1,319,784 |
| May 14, 2026 | John S. Montalbanodirector | Purchase | 20,000 | $4.77 | 241,000 |
| Feb 27, 2026 | Thermopylae Holdings Ltd.10 percent owner | Purchase | 38,000 | $3.44 | 56,134,097 |
| Feb 27, 2026 | Andrew Boothofficer: Chief Financial Officer | Purchase | 42,600 | $3.42 | 195,600 |
| Feb 26, 2026 | Thermopylae Holdings Ltd.10 percent owner | Purchase | 177,457 | $3.27 | 56,096,097 |
| Nov 26, 2025 | John S. Montalbanodirector | Purchase | 50,000 | $3.57 | 221,000 |
CongressHouse and Senate disclosures
Not reported.