AbCellera Biologics Inc.
AbCellera Biologics Inc. (ABCL) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ABCL · as of Sep 30, 2025
Ownership Breakdown
155
Institutional Holders
▲ 21 vs Q2
$524.77M
Total Inst. Value
▲ $154.14M vs Q2
305.38M
Shares Outstanding
freeFloat 67.24%
104.09M
13F Shares Held
▼ 3.55M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ABCL largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BAKER BROS. ADVISORS LP pharmaceutical preparations | 27.53M | 9.22% | 9.22% | $138.45B | Nov 14, 2025 | — held |
CAPITAL WORLD INVESTORS pharmaceutical preparations | 13.36M | 4.48% | 4.48% | $67.21B | Nov 13, 2025 | — held |
BAILLIE GIFFORD & CO pharmaceutical preparations | 10.42M | 3.49% | 3.49% | $52.43B | Oct 31, 2025 | ▲ 63.0K |
TWO SIGMA INVESTMENTS, LP pharmaceutical preparations | 5.18M | 1.73% | 1.73% | $26.03B | Nov 14, 2025 | ▲ 1.06M |
TWO SIGMA ADVISERS, LP pharmaceutical preparations | 4.80M | 1.61% | 1.61% | $24.14B | Nov 14, 2025 | ▲ 729.6K |
ARROWMARK COLORADO HOLDINGS LLC pharmaceutical preparations | 4.11M | 1.38% | 1.38% | $20.65B | Nov 14, 2025 | — held |
BLACKROCK, INC. pharmaceutical preparations | 3.64M | 1.22% | 1.22% | $18.32B | Nov 12, 2025 | ▼ 39.0K |
RENAISSANCE TECHNOLOGIES LLC pharmaceutical preparations | 3.36M | 1.13% | 1.13% | $16.90B | Nov 13, 2025 | ▲ 53.3K |
MORGAN STANLEY pharmaceutical preparations | 2.79M | 93.54% | 93.54% | $14.04B | May 27, 2026 | ▲ 1.80M |
TANG CAPITAL MANAGEMENT LLC pharmaceutical preparations | 2.60M | 87.10% | 87.10% | $13.08B | Nov 14, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
23
Increased
+10.25M shares11
New Positions
first time holders10
Decreased
−3.93M shares0
Sold Out
fully exitedNet shares change (top 50)
+6.31M
+10.25M / −3.93M
Net new holders
+24
11 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ABCL insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
6
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Montalbano John S. director | May 14, 2026 | Purchase | 20,000 | $4.77 | $95.4K | 241.0K | Form 4 ↗ |
Thermopylae Holdings Ltd. 10 percent owner | Feb 27, 2026 | Purchase | 38,000 | $3.44 | $130.7K | 56.13M | Form 4 ↗ |
Thermopylae Holdings Ltd. 10 percent owner | Feb 26, 2026 | Purchase | 177,457 | $3.27 | $580.3K | 56.10M | Form 4 ↗ |
Booth Andrew Chief Financial Officer | Feb 27, 2026 | Purchase | 42,600 | $3.42 | $145.7K | 195.6K | Form 4 ↗ |
Booth Andrew Chief Financial Officer | Jan 1, 2026 | Award | 808,898 | $3.42 | $2.77M | 8.75M | Form 4 ↗ |
Hansen Carl L. G. Chief Executive Officer | Jan 1, 2026 | Award | 2,106,505 | $3.42 | $7.20M | 13.10M | Form 4 ↗ |
Stimart Tryn Chief Legal Officer | Jan 1, 2026 | Award | 539,265 | $3.42 | $1.84M | 4.65M | Form 4 ↗ |
Lecault Veronique Chief Technology Officer | Jan 1, 2026 | Award | 539,265 | $3.42 | $1.84M | 5.20M | Form 4 ↗ |
Quake Stephen director | Dec 1, 2025 | Award | 194,932 | $3.47 | $676.4K | 194.9K | Form 4 ↗ |
Thermopylae Holdings Ltd. 10 percent owner | Dec 18, 2025 | Gift | 225,000 | — | — | 55.92M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
AbCellera Biologics Inc. (ABCL) is primarily owned by institutional investors, who hold approximately 34.1% of total shares outstanding. Company insiders own approximately 32.76%, while retail and public investors account for the remaining 33.15%.
The largest institutional shareholder of AbCellera Biologics Inc. is BAKER BROS. ADVISORS LP, holding approximately 27.53 million shares — equal to 9.22% of outstanding shares — as of September 30, 2025.
A total of 155 institutional investors currently hold ABCL stock, with a combined institutional value of approximately $524,771,216 as of the most recent 13F filing period.
Frequently asked questions
ABCL ownershipAbCellera Biologics Inc. (ABCL) is primarily owned by institutional investors, who hold approximately 34.1% of shares. The largest shareholder is BAKER BROS. ADVISORS LP with a 9.22% stake. Company insiders hold 32.76%. Data sourced from SEC Form 13F as of September 30, 2025.