# EDGAR Filing Document

**Accession Number:** 0000940805
**File Stem:** 0000940805-25-000007
**Filing Date:** 2025-10
**Character Count:** 21318
**Document Hash:** 9ad7e4f817ca31c71f3b0eb36587c60d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940805-25-000007.hdr.sgml**: 20251030

**ACCESSION NUMBER**: 0000940805-25-000007

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251030

**DATE AS OF CHANGE**: 20251030

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BIO-RAD LABORATORIES, INC.
- **CENTRAL INDEX KEY:** 0000012208
- **STANDARD INDUSTRIAL CLASSIFICATION:** LABORATORY ANALYTICAL INSTRUMENTS [3826]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 941381833
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-13379
- **FILM NUMBER:** 251436300

**BUSINESS ADDRESS:**
- **STREET 1:** 1000 ALFRED NOBEL DRIVE
- **CITY:** HERCULES
- **STATE:** CA
- **ZIP:** 94547
- **BUSINESS PHONE:** 5107247000

**MAIL ADDRESS:**
- **STREET 1:** 1000 ALFRED NOBEL DRIVE
- **CITY:** HERCULES
- **STATE:** CA
- **ZIP:** 94547

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BIO RAD LABORATORIES INC
- **DATE OF NAME CHANGE:** 19920703
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SCHWARTZ NORMAN D
- **CENTRAL INDEX KEY:** 0000940805

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**MAIL ADDRESS:**
- **STREET 1:** 1000 ALFRED NOBEL DRIVE
- **CITY:** HERCULES
- **STATE:** CA
- **ZIP:** 94547

## Ex-1

**Exhibit 1**

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree only one statement containing information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of shares of Class B Common Stock of Bio-Rad Laboratories, Inc.

---

| | | | |
|:---|:---|:---|:---|
| Date: | October 28, 2025 | By: | /s/ Norman D. Schwartz |
|  |  |  | Norman D. Schwartz, individually |
|  |  |  | /s/ Steven D. Schwartz |
|  |  |  | Steven D. Schwartz, individually |
|  |  |  | BLUE RAVEN PARTNERS, L.P. |
|  |  |  | /s/ Norman D. Schwartz |
|  |  |  | Norman D. Schwartz, General Partner |
|  |  |  | ALICE N. SCHWARTZ REVOCABLE TRUST |
|  |  |  | /s/ Norman D. Schwartz |
|  |  |  | Norman D. Schwartz, Trustee |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 9)**

**Bio-Rad Laboratories, Inc.**

*(Name of Issuer)*

**Class B Common Stock**

*(Title of Class of Securities)*

**090572207**

*(CUSIP Number)*

**Norman D. Schwartz**<br>1000 Alfred Nobel Drive<br>Hercules CA 94547<br>5107247000

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**09/25/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **090572207** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Norman D. Schwartz** | Name of reporting person<br>**Norman D. Schwartz** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**868982.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4060054.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**868982.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4060054.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4929036.00** | Aggregate amount beneficially owned by each reporting person<br>**4929036.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**97.2%** | Percent of class represented by amount in Row (11)<br>**97.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** EXPLANATORY NOTE:
This amendment no. 9 is being refiled to include Exhibit 1, which was inadvertently omitted from the original amendment no. 9 filed on October 28, 2025 due to a technological error. No other changes were made to the original amendment no. 9.

(7)(8) (9) 494,510 of the reported securities are held by the following trusts, both of which Norman D. Schwartz is the sole trustee: the David Schwartz Non-Exempt Marital Trust (57,000 shares); and the Alice N. Schwartz Revocable Trust (437,510 shares). Prior to her death, Alice N. Schwartz was the sole trustee of the aforementioned trusts. Upon her death, Norman D. Schwartz, Chief Executive Officer and Chairman of the Board of Directors of Bio-Rad, became the sole trustee of such trusts.

Includes 374,472 shares held by Norman D. Schwartz but he disclaims beneficial ownership with respect to 13,006 of such shares owned by his wife.

| **CUSIP No.** | **090572207** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Steven D. Schwartz** | Name of reporting person<br>**Steven D. Schwartz** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**38240.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4060054.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**38240.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4060054.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4098294.00** | Aggregate amount beneficially owned by each reporting person<br>**4098294.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**80.8%** | Percent of class represented by amount in Row (11)<br>**80.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** (7)(9) (11) Includes 13,006 shares owned by Steven D. Schwartz's wife, as to which he disclaims beneficial ownership

| **CUSIP No.** | **090572207** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Blue Raven Partners, L.P.** | Name of reporting person<br>**Blue Raven Partners, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CALIFORNIA** | Citizenship or place of organization<br>**CALIFORNIA** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**4060054.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**4060054.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4060054.00** | Aggregate amount beneficially owned by each reporting person<br>**4060054.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**80.1%** | Percent of class represented by amount in Row (11)<br>**80.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **090572207** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Alice N. Schwartz Revocable Trust** | Name of reporting person<br>**Alice N. Schwartz Revocable Trust** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CALIFORNIA** | Citizenship or place of organization<br>**CALIFORNIA** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**437510.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**437510.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**437510.00** | Aggregate amount beneficially owned by each reporting person<br>**437510.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**8.6%** | Percent of class represented by amount in Row (11)<br>**8.6%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class B Common Stock

**(b) Name of Issuer:**
Bio-Rad Laboratories, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1000 Alfred Nobel Drive, Hercules, CA, 94547

EXPLANATORY NOTE:
This amendment no. 9 is being refiled to include Exhibit 1, which was inadvertently omitted from the original amendment no. 9 filed on October 28, 2025 due to a technological error. No other changes were made to the original amendment no. 9.

Reference is made to the statement on Schedule 13D filed with the Securities and Exchange Commission (the "Commission") on January 13, 2000 by David Schwartz, Alice N. Schwartz, Norman D. Schwartz, Steven D. Schwartz and Blue Raven Partners, L.P., as amended by Amendment No. 1 to the statement on Schedule 13D filed with the Commission on June 27, 2003, Amendment No. 2 to the statement on Schedule 13D filed with the Commission on March 22, 2005, Amendment No. 3 to the statement on Schedule 13D filed with the Commission on July 31, 2007, Amendment No. 4 to the statement on Schedule 13D filed with the Commission on August 27, 2009, Amendment No. 5 to the statement on Schedule 13D filed with the Commission on November 15, 2013, Amendment No. 6 to the statement on Schedule 13D filed with the Commission on June 29, 2017, Amendment No. 7 to the statement on Schedule 13D filed with the Commission on July 12, 2019, and Amendment No. 8 to the statement on Schedule 13D filed with the Commission on April 11, 2022 by Alice N. Schwartz, Norman D. Schwartz, Steven D. Schwartz, Blue Raven Partners, L.P. and the Alice N. Schwartz Revocable Trust (the "Prior Filing").  Each of Norman D. Schwartz and Steven D. Schwartz together with Blue Raven Partners, L.P. and the Alice N. Schwartz Revocable Trust (sometimes collectively referred to as the "Shareholders") has agreed to file this statement jointly in an agreement entered into pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and included as an exhibit to this statement, which agreement is hereby incorporated by reference. The Prior Filing is incorporated herein by reference and is hereby amended by this statement which is filed by the Shareholders, with respect to whom the following information relates. Alice N. Schwartz, a former Director Emeritus of Bio-Rad and a reporting person in the Prior Filing, passed away on September 25, 2025. Upon her death, Norman D. Schwartz became the sole trustee of the Alice N. Schwartz Revocable Trust.

**Item 4. Purpose of Transaction**

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 5. Interest in Securities of the Issuer**

**(a)**
Item 5 to the Schedule 13D is hereby amended, in pertinent part, as follows:
 (a)-(b)

 The Partnership:

The Partnership is the direct and beneficial owner of 4,060,054 shares of the Class B Common Stock with respect to which it has sole voting and dispositive power, representing 80.1% of the issued and outstanding Class B Common Stock.

Norman D. Schwartz and Steven D. Schwartz:

Norman D. Schwartz and Steven D. Schwartz have indirect beneficial ownership of the 4,060,054 shares of Class B Common Stock held by the Partnership, over which they have shared voting and dispositive power, as the result of their positions as general partners in the Partnership.

Norman D. Schwartz is the beneficial owner of 868,982 shares of Class B Common Stock. 494,510 of such shares of Class B Common Stock are held in the following trusts, both of which Mr. Schwartz is the sole trustee: the David Schwartz Non-Exempt Marital Trust (57,000 shares); and the Alice N. Schwartz Revocable Trust (437,510 shares). Prior to her death, Alice N. Schwartz was the sole trustee of the aforementioned trusts. Upon her death, Norman D. Schwartz became the sole trustee of such trusts. In addition, Mr. Schwartz holds 374,472 shares of Class B Common Stock but disclaims beneficial ownership with respect to 13,006 of such shares owned by Mr. Schwartz's wife. As a result of the foregoing, Mr. Schwartz is deemed to have beneficial ownership of an aggregate of 4,929,036 shares of Class B Common Stock, representing 97.2% of the issued and outstanding Class B Common Stock.

Steven D. Schwartz holds 38,240 shares of Class B Common Stock but disclaims beneficial ownership with respect to 13,006 of such shares owned by Steven D. Schwartz's wife.  As a result of the foregoing, Steven D. Schwartz is deemed to have beneficial ownership of an aggregate of 4,098,294 shares of Class B Common Stock, representing 80.8% of the issued and outstanding Class B Common Stock.

The Alice N. Schwartz Revocable Trust is the direct and beneficial owner of 437,510 shares of Class B Common Stock with respect to which it has sole voting and dispositive power, representing 8.6% of the issued and outstanding Class B Common Stock.
All percentages reported herein with respect to Class B Common Stock are calculated based upon 5,070,184 shares of Class B Common Stock outstanding as of July 28, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on July 31, 2025.

**(b)**
—

**(c)**
Not applicable

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

Item 6 to the Schedule 13D is hereby amended, in pertinent part, as follows:
Norman D. Schwartz owns beneficially 3,228,922 shares of Class A Common Stock, representing 14.6% of the issued and outstanding Class A Common Stock.  2,714,928 of these shares are held by the following trusts, all of which Norman D. Schwartz is the sole trustee: the David and Alice N. Schwartz Charitable Remainder Unitrust (34,311 shares); the David Schwartz Exemption Trust (90 shares); the David Schwartz Exempt Marital Trust (240 shares); the David Schwartz Non-Exempt Marital Trust (898,931 shares); and the Alice N. Schwartz Revocable Trust (1,781,356 shares). 17,145 of these shares are held by the Alles Institute for Medical Research, a Delaware Charitable Nonstock Corporation, with respect to which Norman D. Schwartz shares voting and dispositive power consistent with the purposes of the Delaware Charitable Nonstock Corporation.

Steven D. Schwartz holds 380,789 shares of Class A Common Stock, but disclaims beneficial ownership with respect to 1,498 of such shares owned by Steven D. Schwartz's wife. Steven D. Schwartz's shares of Class A Common Stock represent approximately 1.7% of the issued and outstanding Class A Common Stock. 17,145 of these shares are held by the Alles Institute for Medical Research, a Delaware Charitable Nonstock Corporation, with respect to which Steven D. Schwartz shares voting and dispositive power consistent with the purposes of the Delaware Charitable Nonstock Corporation.

The Alice N. Schwartz Revocable Trust holds 1,781,356 shares of Class A Common Stock, representing 8.2% of the issued and outstanding Class A Common Stock.

Norman D. Schwartz and Steven D. Schwartz are brothers.  By virtue of the Shareholders' Class B Common Stock ownership, they control the management of the Company and may be deemed to be "control persons" of the Company as that term is defined in the Rules and Regulations of the Commission.

All percentages reported herein with respect to Class A Common Stock are calculated based upon 21,992,307 shares of Class A Common Stock outstanding as of July 28, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on July 31, 2025. For Norman D. Schwartz, the beneficial ownership calculation with respect to Class A Common Stock is calculated by using a denominator of (a) 21,992,307 shares of Class A Common Stock plus (b) 53,415 shares of Class A Common Stock issuable upon the exercise of stock options exercisable by Mr. Schwartz immediately or within sixty days of September 25, 2025.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Norman D. Schwartz

**Signature:** /s/ Norman D. Schwartz

**Name/Title:** Norman D. Schwartz, Individually

**Date:** 10/28/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Steven D. Schwartz

**Signature:** /s/ Steven D. Schwartz

**Name/Title:** Steven D. Schwartz, Individually

**Date:** 10/28/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Blue Raven Partners, L.P.

**Signature:** /s/  Norman D. Schwartz

**Name/Title:** Norman D. Schwartz, General Partner

**Date:** 10/28/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Alice N. Schwartz Revocable Trust

**Signature:** /s/  Norman D. Schwartz

**Name/Title:** Norman D. Schwartz, Trustee

**Date:** 10/28/2025