SEC Form 4 · Updated Daily
BIO
— BIO-RAD LABORATORIES, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| SCHWARTZ ALICE N | 10%+ Owner | 1,781,356 | 2024-08-26 | G |
| SCHWARTZ DAVID | 10%+ Owner · Director · Officer | 516,776 | 2011-12-14 | M |
| SCHWARTZ NORMAN D | 10%+ Owner · Director · Officer | 450,873 | 2026-09-06 | M |
| GOETZ JOHN | Officer | 67,861.32 | 2017-09-13 | M |
| BENNETT JAMES | Director | 34,329 | 2010-11-19 | S |
| SCHWARTZ STEVEN D | 10%+ Owner | 25,234 | 2024-08-26 | G |
| Magni Giovanni | Officer | 22,743 | 2020-09-11 | M |
| COREY COLLEEN | Officer | 19,759 | 2025-09-06 | M |
| HERTIA JOHN | Officer | 19,566 | 2019-09-12 | M |
| WADLER SANFORD | Officer | 12,317 | 2012-11-04 | M |
| Dahowski Diane | Officer | 12,155.03 | 2023-09-04 | M |
| Crowley Michael | Officer | 11,171 | 2025-03-14 | M |
| Last Andrew J. | Officer | 10,559.45 | 2024-09-06 | M |
| TUMOLO ANNETTE | Officer | 9,393.35 | 2021-11-12 | M |
| TSINGOS CHRISTINE A | Director | 6,683.1 | 2018-12-14 | S |
| HILLMAN AL | Director | 6,252 | 2009-12-14 | S |
| ERNST TIMOTHY S | Officer | 5,897.48 | 2024-02-28 | M |
| CRUTCHFIELD BRADFORD | Officer | 5,422 | 2014-06-10 | M |
| Lakkaraju Roop Kalyan | Officer | 4,932.963 | 2026-09-06 | M |
| HUTTON RONALD W | Officer | 4,740.29 | 2020-09-11 | M |
| EVRAN SEDAT | Officer | 4,647.12 | 2026-10-20 | M |
| MAY SIMON | Officer | 3,399.99 | 2023-09-04 | M |
| Daskal Ilan | Officer | 2,755.21 | 2023-09-02 | M |
| DiVincenzo Jonathan P. | Officer | 2,631 | 2026-09-05 | M |
| BARRY JAMES | Officer | 2,494.682 | 2026-09-06 | M |
| ENGELHARDT EVA ANETTE | Officer | 2,313 | 2026-09-06 | M |
| WRIGHT DARA | Officer | 2,001.08 | 2023-12-16 | M |
| ENLOE COURTNEY C | Officer | 1,956.777 | 2026-09-06 | M |
| SODERBERG SHAWN MARIE | Officer | 1,952.12 | 2015-12-14 | M |
| Allison Schwartz | Director | 1,768 | 2026-09-06 | M |
| Mehta Rajat | Officer | 1,736.052 | 2026-09-05 | M |
| HINCKLEY GREGORY K | Director | 1,215 | 2026-04-21 | M |
| PINKSTON ARNOLD A | Director | 715 | 2026-04-21 | M |
| PEI MELINDA LITHERLAND | Director | 715 | 2026-04-21 | M |
| EDWARDS JEFFREY L | Director | 715 | 2026-04-21 | M |
| Hall Shannon | Director | 564.57 | 2017-09-13 | S |
| RAMALINGAM AJIT | Officer | 487.4 | 2023-09-02 | M |
| McComb Joel | Director | 400 | 2014-07-23 | — |
| DEVILLIERS TANIA | Officer | 55 | 2023-09-19 | — |
| LOVE TED W | Director | 0 | 2010-03-24 | — |
| STARK JAMES R | Officer | 0 | 2019-11-11 | S |
| MALCHIONE ROBERT M | Director | 0 | 2014-01-01 | — |
| NEFF DEBORAH J | Director | 0 | 2011-10-26 | — |
| DRAPEAU LOUIS | Officer | 0 | 2007-02-14 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-20 | EVRAN SEDAT | Option exercise (derivative) | 1,044 | $0.00 | 1,044 |
| 2026-10-20 | EVRAN SEDAT | Tax withholding | 487 | $354.50 | 4,160.12 |
| 2026-10-20 | EVRAN SEDAT | Option exercise | 1,044 | $0.00 | 4,647.12 |
| 2026-09-06 | SCHWARTZ NORMAN D | Option exercise (derivative) | 3,455 | $0.00 | 6,912 |
| 2026-09-06 | SCHWARTZ NORMAN D | Tax withholding | 1,854 | $386.11 | 449,019 |
| 2026-09-06 | SCHWARTZ NORMAN D | Option exercise | 3,455 | $0.00 | 450,873 |
| 2026-09-06 | Lakkaraju Roop Kalyan | Option exercise (derivative) | 1,536 | $0.00 | 3,072 |
| 2026-09-06 | Lakkaraju Roop Kalyan | Tax withholding | 782 | $386.11 | 4,150.963 |
| 2026-09-06 | Lakkaraju Roop Kalyan | Option exercise | 1,536 | $0.00 | 4,932.963 |
| 2026-09-06 | ENLOE COURTNEY C | Option exercise (derivative) | 768 | $0.00 | 1,536 |
| 2026-09-06 | ENLOE COURTNEY C | Tax withholding | 305 | $386.11 | 1,651.777 |
| 2026-09-06 | ENLOE COURTNEY C | Option exercise | 768 | $0.00 | 1,956.777 |
| 2026-09-06 | ENGELHARDT EVA ANETTE | Option exercise (derivative) | 1,152 | $0.00 | 2,304 |
| 2026-09-06 | ENGELHARDT EVA ANETTE | Tax withholding | 485 | $386.11 | 1,828 |
| 2026-09-06 | ENGELHARDT EVA ANETTE | Option exercise | 1,152 | $0.00 | 2,313 |
| 2026-09-06 | EVRAN SEDAT | Option exercise (derivative) | 864 | $0.00 | 1,728 |
| 2026-09-06 | EVRAN SEDAT | Tax withholding | 277 | $386.11 | 3,603.12 |
| 2026-09-06 | EVRAN SEDAT | Option exercise | 864 | $0.00 | 3,880.12 |
| 2026-09-06 | BARRY JAMES | Option exercise (derivative) | 1,056 | $0.00 | 2,112 |
| 2026-09-06 | BARRY JAMES | Tax withholding | 470 | $386.11 | 2,024.682 |
| 2026-09-06 | BARRY JAMES | Option exercise | 1,056 | $0.00 | 2,494.682 |
| 2026-09-06 | Allison Schwartz | Option exercise (derivative) | 92 | $0.00 | 185 |
| 2026-09-06 | Allison Schwartz | Tax withholding | 34 | $386.11 | 1,734 |
| 2026-09-06 | Allison Schwartz | Option exercise | 92 | $0.00 | 1,768 |
| 2026-09-05 | SCHWARTZ NORMAN D | Option exercise (derivative) | 4,109 | $0.00 | 12,330 |
| 2026-09-05 | SCHWARTZ NORMAN D | Tax withholding | 2,876 | $386.11 | 447,418 |
| 2026-09-05 | SCHWARTZ NORMAN D | Option exercise | 4,109 | $0.00 | 450,294 |
| 2026-09-05 | Lakkaraju Roop Kalyan | Option exercise (derivative) | 1,370 | $0.00 | 4,110 |
| 2026-09-05 | Lakkaraju Roop Kalyan | Tax withholding | 559 | $386.11 | 3,396.963 |
| 2026-09-05 | Lakkaraju Roop Kalyan | Option exercise | 1,370 | $0.00 | 3,955.963 |
| 2026-09-05 | Mehta Rajat | Option exercise (derivative) | 1,370 | $0.00 | 4,110 |
| 2026-09-05 | Mehta Rajat | Option exercise (derivative) | 456 | $0.00 | 1,371 |
| 2026-09-05 | Mehta Rajat | Tax withholding | 504 | $386.11 | 1,232.052 |
| 2026-09-05 | Mehta Rajat | Option exercise | 1,370 | $0.00 | 1,736.052 |
| 2026-09-05 | Mehta Rajat | Tax withholding | 233 | $386.11 | 366.052 |
| 2026-09-05 | Mehta Rajat | Option exercise | 456 | $0.00 | 599.052 |
| 2026-09-05 | ENLOE COURTNEY C | Option exercise (derivative) | 685 | $0.00 | 2,055 |
| 2026-09-05 | ENLOE COURTNEY C | Tax withholding | 246 | $386.11 | 1,188.777 |
| 2026-09-05 | ENLOE COURTNEY C | Option exercise | 685 | $0.00 | 1,434.777 |
| 2026-09-05 | DiVincenzo Jonathan P. | Option exercise (derivative) | 1,712 | $0.00 | 5,138 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.