Bio-Rad Laboratories, Inc. (BIO) Shareholders & Insider Trades
Bio-Rad Laboratories shareholders at a glance
The largest holder of Bio-Rad Laboratories stock is Estate Of SCHWARTZ ALICE N, with 2.7 million shares (12.52% of the company), worth about $1.05 billion as of September 25, 2026. The 10 largest holders together own 55.1%.
In Q2 2026, 5 institutional holdings reports listed 1,820 shares worth $545,000.
Insiders reported 34 transactions in the last two years: 4 sales worth $1.83 million and no purchases. The newest one on file is from May 11, 2026 (Engelhardt Eva Anette, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 11, 2026.
Bio-Rad Laboratories, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Bio-Rad Laboratories shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Estate Of SCHWARTZ ALICE N | 2.7 million | 12.52% | $1.0B |
| First Eagle Investment Management LLC | 2.6 million | 12.02% | $1.0B |
| BlackRock Advisors LLC | 1.6 million | 7.34% | $615.0M |
| DFA Australia Ltd. | 923,806 | 4.26% | $357.0M |
| Vanguard Capital Management LLC | 826,972 | 3.81% | $319.0M |
| Ariel Investments LLC | 816,751 | 3.77% | $315.0M |
| Vanguard Portfolio Management LLC | 816,198 | 3.77% | $315.0M |
| EARNEST Partners LLC | 580,752 | 2.68% | $224.0M |
| State Street Corporation | 571,762 | 2.64% | $221.0M |
| Managed Account Advisors LLC | 490,412 | 2.26% | $189.0M |
As of September 25, 2026.
Bio-Rad Laboratories institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 5 | 1,820 | $545,000 |
| Q1 2026 | 7 | 3,780 | $1.1M |
| Q4 2025 | 6 | 2,830 | $861,000 |
| Q3 2025 | 5 | 2,890 | $809,000 |
| Q2 2025 | 6 | 2,140 | $520,000 |
| Q1 2025 | 6 | 2,140 | $518,000 |
| Q4 2024 | 10 | 4,070 | $1.3M |
| Q3 2024 | 7 | 3,330 | $1.1M |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Bio-Rad Laboratories insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Engelhardt Eva Anette | May 11, 2026 | Officer | Sale at price 246.54 per share. | $135,597 |
| Lakkaraju Roop Kalyan | Apr 24, 2026 | Chief Financial Officer | -- | – |
| Enloe Courtney C | Apr 24, 2026 | General Counsel | -- | – |
| Pinkston Arnold A | Apr 21, 2026 | Director | -- | – |
| Pei Melinda Litherland | Apr 21, 2026 | Director | -- | – |
| Hinckley Gregory K | Apr 21, 2026 | Director | -- | – |
| Edwards Jeffrey L | Apr 21, 2026 | Director | -- | – |
| Barry James | Nov 6, 2025 | Officer | Sale at price 306.18 per share. | $214,289 |
| Divincenzo Jonathan P | Oct 24, 2025 | President | -- | – |
| Evran Sedat | Oct 20, 2025 | Officer | -- | – |
| Lakkaraju Roop Kalyan | Sep 5, 2025 | Chief Financial Officer | -- | – |
| Schwartz Norman D | Sep 5, 2025 | Chief Executive Officer | -- | – |
Newest 12 of 34 insider transactions in the last two years.
Questions and answers
Who owns the most Bio-Rad Laboratories stock?
Estate Of SCHWARTZ ALICE N, with 12.52% of the company (as of September 25, 2026). Next: First Eagle Investment Management LLC (12.02%) and BlackRock Advisors LLC (7.34%).
How many institutions own Bio-Rad Laboratories stock?
5 institutional holdings reports listed Bio-Rad Laboratories shares in Q2 2026, 1,820 shares in all worth $545,000.
Are Bio-Rad Laboratories insiders buying or selling the stock?
In the last two years insiders reported 4 sales and no purchases (34 transactions in all); the newest on file is from May 11, 2026.
