Quick Takeaways
- Norman D. Schwartz filed SCHEDULE 13D/A for Bio-Rad Laboratories, Inc. Class B Common Stock (BIO).
- Disclosed ownership: 97%.
- Date of event: 25 Sep 2025.
Norman D. Schwartz - 25 Sep 2025 SCHEDULE 13D/A Report for Bio-Rad Laboratories, Inc. Class B Common Stock (BIO)
- Filing Manager
- Norman D. Schwartz
- Reporting Manager
- Norman D. Schwartz
- Symbol
- BIO
- Shares outstanding
- 5,071,025 shares
- Disclosed Ownership
- 4,929,036 shares
- Ownership
- 97%
- Form type
- SCHEDULE 13D/A
- Filing time
- 30 Oct 2025, 16:36:55 UTC
- Date of event
- 25 Sep 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Norman D. Schwartz disclosed 97% ownership in Bio-Rad Laboratories, Inc. Class B Common Stock (BIO) on 25 Sep 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 30 Oct 2025, 16:36.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Norman D. Schwartz | 97% | 4,929,036 | 868,982 | 4,060,054 | /s/ Norman D. Schwartz | Norman D. Schwartz, Individually | 0000940805 |
| Steven D. Schwartz | 81% | 4,098,294 | 38,240 | 4,060,054 | /s/ Steven D. Schwartz | Steven D. Schwartz, Individually | 0000940804 |
| Blue Raven Partners, L.P. | 80% | 4,060,054 | 4,060,054 | 0 | /s/ Norman D. Schwartz | Norman D. Schwartz, General Partner | |
| Alice N. Schwartz Revocable Trust | 8.6% | 437,510 | 437,510 | 0 | /s/ Norman D. Schwartz | Norman D. Schwartz, Trustee |