SCHWARTZ NORMAN D → BIO-RAD LABORATORIES, INC. BIO-B

Stake: 14.60% Shares: 3,228,922 CUSIP: 090572207 Class: Class A Common Stock

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 14/100 · Filer 90d Win Rate: 100% · Hist. 90d Edge: +9.1%

Passive Schedule 13G filer baseline
High conviction ownership stake (14.6%)
11 NPORT-P mutual funds holding CUSIP

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. Norman D. Schwartz, along with other members of his 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.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

2 filings by this filer

1 other filing in the data moat

Short Interest

—

Not in latest FINRA snapshot

Post-Filing Returns · since 2025-09-25 on BIO-B

+1 day

0.0%

+5 days

0.0%

+30 days

+12.7%

+60 days

+9.1%

+90 days

+9.1%

+180 days

-5.7%

Anchor price 284.88 on closest trading day on/after 2025-09-25. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on BIO-RAD LABORATORIES, INC.

Filed	Form	Filer	Stake	Shares
2025-10-28	SCHEDULE	SCHWARTZ NORMAN D	97.20%	4,929,036	view →
2019-07-12	SC	SCHWARTZ ALICE N	—	—	view →

Other Filings by SCHWARTZ NORMAN D

Filed	Form	Issuer	Stake	Shares
2025-10-28	SCHEDULE	BIO-RAD LABORATORIES, INC. BIO-B	97.20%	4,929,036	view →

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