BIO SEC Filing News — Bio-Rad Laboratories, Inc.

Latest SEC filings for Bio-Rad Laboratories, Inc. (BIO) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-09.

Bio-Rad Laboratories, Inc. develops, manufactures, and distributes life science research and clinical diagnostic products in the United States, Europe, Asia, Canada, Latin America, and internationally. It operates through two segments, Life Science and Clinical Diagnostics. The Life Science segment develops, manufactures, and markets instruments, systems, reagents, and consumables to separate, purify, characterize, and quantify biological materials, including cells, proteins, and nucleic acids u…
Sector: Healthcare Industry: Medical Devices Market Cap: $9.4B
20
Total Filings
0
Bullish Classifications
1
Bearish Classifications
14
Insider Transactions
2
Material Events (8-K)
2
Periodic Reports
Rule-based classifications for BIO currently lean bearish. Of the 20 filing records displayed, 1 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
BIO Filing Activity Snapshot 2026-04-30 — 2026-09-09
Insider Transactions (Form 4)
0 buys vs 1 sell
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$219.3K
Alles Institute for Medical Research Corp · 2026-05-28
700 shares · Form 144
Form 144 Notices
2
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 14 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 14 filings in this group are Form 4s for Bio-Rad Laboratories, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 14 insider filings shown, the breakdown is 9 compensation award, 4 option exercise and 1 open-market sale. 1 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×9
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Option exercise ×4
The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Open-market sale ×1
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

Allison Schwartz (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 228 — —
F Tax withholding on vested shares 82 $386.11 $31.7K
M Option exercise 92 — —
F Tax withholding on vested shares 34 $386.11 $13.1K
A Compensation award derivative · Restricted Stock Units 719 — —
M Option exercise derivative · Restricted Stock Units 228 — —
M Option exercise derivative · Restricted Stock Units 92 — —
Filing: Form 4 (Insider Transaction) Insider: Allison Schwartz (Director) Shares: 436
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

BARRY JAMES (EVP, President, LSG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 1,027 — —
F Tax withholding on vested shares 369 $386.11 $142.5K
M Option exercise 1,056 — —
F Tax withholding on vested shares 470 $386.11 $181.5K
A Compensation award derivative · Restricted Stock Units 4,313 — —
M Option exercise derivative · Restricted Stock Units 1,027 — —
M Option exercise derivative · Restricted Stock Units 1,056 — —
Filing: Form 4 (Insider Transaction) Insider: BARRY JAMES (EVP, President, LSG) Shares: 2,922
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

EVRAN SEDAT (EVP, Global Supply Chain) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 1,027 — —
F Tax withholding on vested shares 329 $386.11 $127.0K
M Option exercise 864 — —
F Tax withholding on vested shares 277 $386.11 $107.0K
A Compensation award derivative · Restricted Stock Units 4,026 — —
M Option exercise derivative · Restricted Stock Units 1,027 — —
M Option exercise derivative · Restricted Stock Units 864 — —
Filing: Form 4 (Insider Transaction) Insider: EVRAN SEDAT (EVP, Global Supply Chain) Shares: 2,497
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

ENGELHARDT EVA ANETTE (EVP, President, CDG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 1,027 — —
F Tax withholding on vested shares 369 $386.11 $142.5K
M Option exercise 1,152 — —
F Tax withholding on vested shares 485 $386.11 $187.3K
A Compensation award derivative · Restricted Stock Units 4,313 — —
M Option exercise derivative · Restricted Stock Units 1,027 — —
M Option exercise derivative · Restricted Stock Units 1,152 — —
Filing: Form 4 (Insider Transaction) Insider: ENGELHARDT EVA ANETTE (EVP, President, CDG) Shares: 3,033
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

DiVincenzo Jonathan P. (President & COO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 1,712 — —
F Tax withholding on vested shares 668 $386.11 $257.9K
A Compensation award derivative · Restricted Stock Units 6,326 — —
M Option exercise derivative · Restricted Stock Units 1,712 — —
Filing: Form 4 (Insider Transaction) Insider: DiVincenzo Jonathan P. (President & COO) Shares: 2,380
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

ENLOE COURTNEY C (EVP, General Counsel & Sec) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 685 — —
F Tax withholding on vested shares 246 $386.11 $95.0K
M Option exercise 768 — —
F Tax withholding on vested shares 305 $386.11 $117.8K
A Compensation award derivative · Restricted Stock Units 2,876 — —
M Option exercise derivative · Restricted Stock Units 685 — —
M Option exercise derivative · Restricted Stock Units 768 — —
Filing: Form 4 (Insider Transaction) Insider: ENLOE COURTNEY C (EVP, General Counsel & Sec) Shares: 2,004
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

Mehta Rajat (EVP, GBL Commercial Operations) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 456 — —
F Tax withholding on vested shares 233 $386.11 $90.0K
M Option exercise 1,370 — —
F Tax withholding on vested shares 504 $386.11 $194.6K
A Compensation award derivative · Restricted Stock Units 4,601 — —
M Option exercise derivative · Restricted Stock Units 456 — —
M Option exercise derivative · Restricted Stock Units 1,370 — —
Filing: Form 4 (Insider Transaction) Insider: Mehta Rajat (EVP, GBL Commercial Operations) Shares: 2,563
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

Lakkaraju Roop Kalyan (EVP, Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 1,370 — —
F Tax withholding on vested shares 559 $386.11 $215.8K
M Option exercise 1,536 — —
F Tax withholding on vested shares 782 $386.11 $301.9K
A Compensation award derivative · Restricted Stock Units 6,326 — —
M Option exercise derivative · Restricted Stock Units 1,370 — —
M Option exercise derivative · Restricted Stock Units 1,536 — —
Filing: Form 4 (Insider Transaction) Insider: Lakkaraju Roop Kalyan (EVP, Chief Financial Officer) Shares: 4,247
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-09

BIO insider Form 4 filed for equity award, exercise, or tax withholding

SCHWARTZ NORMAN D (Director, Chairman & CEO, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 4,109 — —
F Tax withholding on vested shares 2,876 $386.11 $1.11M
M Option exercise 3,455 — —
F Tax withholding on vested shares 1,854 $386.11 $715.8K
A Compensation award derivative · Restricted Stock Units 17,251 — —
M Option exercise derivative · Restricted Stock Units 4,109 — —
M Option exercise derivative · Restricted Stock Units 3,455 — —
Filing: Form 4 (Insider Transaction) Insider: SCHWARTZ NORMAN D (Director, Chairman & CEO, 10% Owner) Shares: 12,294
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-09-03

BIO insider Form 4 filed for equity award, exercise, or tax withholding

BARRY JAMES (EVP, President, LSG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 425 — —
F Tax withholding on vested shares 154 $380.96 $58.7K
M Option exercise derivative · Restricted Stock Units 174 — —
M Option exercise derivative · Restricted Stock Units 251 — —
Filing: Form 4 (Insider Transaction) Insider: BARRY JAMES (EVP, President, LSG) Shares: 579
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-09-03

BIO insider Form 4 filed for equity award, exercise, or tax withholding

Allison Schwartz (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 117 — —
F Tax withholding on vested shares 43 $380.96 $16.4K
M Option exercise derivative · Restricted Stock Units 42 — —
M Option exercise derivative · Restricted Stock Units 75 — —
Filing: Form 4 (Insider Transaction) Insider: Allison Schwartz (Director) Shares: 160
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-09-03

BIO insider Form 4 filed for equity award, exercise, or tax withholding

SCHWARTZ NORMAN D (Director, Chairman & CEO, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 5,087 — —
F Tax withholding on vested shares 2,336 $380.96 $889.9K
M Option exercise derivative · Restricted Stock Units 2,082 — —
M Option exercise derivative · Restricted Stock Units 3,005 — —
Filing: Form 4 (Insider Transaction) Insider: SCHWARTZ NORMAN D (Director, Chairman & CEO, 10% Owner) Shares: 7,423
View on SEC EDGAR → Open Filing Document →
Form 4 Option exercise Tax / Compensation Filing 2026-07-28

BIO insider Form 4 filed for equity award, exercise, or tax withholding

ENGELHARDT EVA ANETTE (EVP, President, CDG) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 246 — —
F Tax withholding on vested shares 89 $314.46 $28.0K
M Option exercise derivative · Restricted Stock Units 246 — —
Filing: Form 4 (Insider Transaction) Insider: ENGELHARDT EVA ANETTE (EVP, President, CDG) Shares: 335
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-05-13

BIO insider ENGELHARDT EVA ANETTE (EVP, President, CDG) sold 550 shares (~$135.6K)

ENGELHARDT EVA ANETTE, listed as EVP, President, CDG at BIO-RAD LABORATORIES, INC., reported an open-market sale of 550 BIO shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 550 $246.54 $135.6K
Filing: Form 4 (Insider Transaction) Insider: ENGELHARDT EVA ANETTE (EVP, President, CDG) Shares: 550 Est. Value: $135.6K
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 2 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Bio-Rad Laboratories, Inc. has 2 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-05-28

BIO Form 144 filed for proposed insider sale by Alles Institute for Medical Research Corp (700 shares) ~$219.3K

Alles Institute for Medical Research Corp filed a Form 144 with the SEC indicating intent to sell BIO (BIO-RAD LABORATORIES, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Alles Institute for Medical Research Corp Shares: 700 Est. Value: $219.3K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-05-11

BIO Form 144 filed for proposed insider sale by EVA ENGELHARDT (550 shares) ~$135.6K

EVA ENGELHARDT filed a Form 144 with the SEC indicating intent to sell BIO (BIO-RAD LABORATORIES, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: EVA ENGELHARDT Shares: 550 Est. Value: $135.6K
View on SEC EDGAR → Open Filing Document →
Material Events 2 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 2 in this period for Bio-Rad Laboratories, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-04

BIO filed 8-K — material company event

BIO-RAD LABORATORIES, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-04-30

BIO filed 8-K — material company event

BIO-RAD LABORATORIES, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Periodic Reports 2 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 2 quarterly reports (10-Q) for Bio-Rad Laboratories, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-04

BIO filed Quarterly Report (10-Q)

BIO-RAD LABORATORIES, INC. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →
Form 10-Q Quarterly Report 2026-04-30

BIO filed Quarterly Report (10-Q)

BIO-RAD LABORATORIES, INC. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →

How we classify Bio-Rad Laboratories, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on BIO. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — BIO SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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