As of November 6, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Bio-Rad Laboratories Inc. The largest reported stake is Norman D. Schwartz's, at 97.2%. 8 filings are on record since July 18, 2025 (Schedule 13D/A, October 30, 2025).
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Key facts
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
- · Holder: Norman D. Schwartz · Percent: 14.6% · SCHEDULE 13D/A
- · Holder: Norman D. Schwartz · Percent: 97.2% · SCHEDULE 13D/A
- · Holder: Norman D. Schwartz · Percent: 14.6% · SCHEDULE 13D/A
- · Holder: Norman D. Schwartz · Percent: 97.2% · SCHEDULE 13D/A
Bio-Rad Laboratories Inc has 8 Schedule 13D or 13G filings on record since 2025-07-18. 4 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Layoffs on record: 1 filing or notice, latest 2026-08-04 (layoff filings and notices).
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 97.2% | 4,929,036 | SCHEDULE 13D/A, 2025-10-30 | 2025-09-25 | |
| 12.3% | 2,732,073 | SCHEDULE 13D/A, 2025-07-18 | 2025-05-01 | |
| First Eagle Investment Management, LLC | 11.4% | 2,528,321 | SCHEDULE 13G/A, 2025-08-06 | 2025-06-30 |
| BlackRock, Inc. | 7.4% | 1,618,123 | SCHEDULE 13G/A, 2025-10-17 | 2025-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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More on Bio-Rad Laboratories Inc and the records around it.
Bio-Rad Laboratories Inc elsewhere on the record
- Layoff notices Aug 2026
- Who owns it
Companies that share a holder
- First Eagle Investment Management, LLC also filed stake reports on 16 other companies: AMTECH SYSTEMS INC (Aug 2026), DENTSPLY SIRONA Inc. (Aug 2026), Quanterix Corp (Aug 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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Purpose of Transaction (Item 4)
Alice N. Schwartz
Item 4 to the Schedule 13D is hereby amended, in pertinent part, as follows: The purposes of the transactions on December 10, 2018, December 3, 2019, December 7, 2020, November 9, 2021, November 7, 2022, December 5, 2023 and August 26, 2024 for Alice N. Schwartz and for the Alice N. Schwartz Revocable Trust set forth in Item 5 were estate planning. The purpose of the Shareholders' ownership of Bio-Rad shares has been control of the Company. Mrs. Schwartz, along with other members of her family, control the management of the Company and may be deemed to be a "parent" of the Company as that term is defined in the Rules and Regulations of the Commission.Item 4 of the SCHEDULE 13D/A filed 2025-07-18
Norman D. Schwartz
Item 4 to the Schedule 13D is hereby amended, in pertinent part, as follows: The purpose of the Shareholders' ownership of Bio-Rad shares has been control of the Company. The Shareholders control the management of the Company and may be deemed to be "parents" of the Company as that term is defined in the Rules and Regulations of the Commission.Item 4 of the SCHEDULE 13D/A filed 2025-10-30
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-18 | Alice N. Schwartz | 12.3% | SCHEDULE 13D/A |
| 2025-08-06 | First Eagle Investment Management, LLC | 11.4% | SCHEDULE 13G/A |
| 2025-10-17 | BlackRock, Inc. | 7.4% | SCHEDULE 13G/A |
| 2025-10-28 | Norman D. Schwartz | 14.6% | SCHEDULE 13D/A |
| 2025-10-28 | Norman D. Schwartz | 97.2% | SCHEDULE 13D/A |
| 2025-10-30 | Norman D. Schwartz | 14.6% | SCHEDULE 13D/A |
| 2025-10-30 | Norman D. Schwartz | 97.2% | SCHEDULE 13D/A |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
Questions about who owns Bio-Rad Laboratories Inc
Who owns Bio-Rad Laboratories Inc?
On this page, 4 holders' latest ownership filings report 5% or more of Bio-Rad Laboratories Inc: Norman D. Schwartz (97.2%, Schedule 13D/A, filed 2025-10-30), Alice N. Schwartz (12.3%, Schedule 13D/A, filed 2025-07-18), First Eagle Investment Management, LLC (11.4%, Schedule 13G/A, filed 2025-08-06) and BlackRock, Inc. (7.4%, Schedule 13G/A, filed 2025-10-17).
Who are the largest shareholders of Bio-Rad Laboratories Inc?
By the share each holder's latest filing reports, the largest holders of Bio-Rad Laboratories Inc on this page are Norman D. Schwartz (97.2%), Alice N. Schwartz (12.3%) and First Eagle Investment Management, LLC (11.4%).
When did Norman D. Schwartz buy into Bio-Rad Laboratories Inc?
The filings give report dates, not purchase dates. The earliest filing from Norman D. Schwartz on this page is the Schedule 13D/A, filed 2025-10-28, reporting 14.6%; its latest, Schedule 13D/A filed 2025-10-30, reports 97.2%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 8 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.