← United States · Coverage record
US · SEC FORM 4
BIO-RAD LABORATORIES, INC.
BIO BIO.B · NYSE · CIK 0000012208 · Healthcare · Medical Devices
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
51 Form 4 transaction lines observed in the same window
1 sales · 50 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 7 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot.—
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
The FINRA report lists no short interest for this ticker.
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
No qualifying code P equity purchase is present in the local Form 4 history.
Form 4 evidence
56 transaction lines in the latest 365-day window; 591 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-06 | SCHWARTZ NORMAN D | Option exercise / conversion (M) | Bio-Rad A Common Stock | 3,455 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | SCHWARTZ NORMAN D | Tax withholding (F) | Bio-Rad A Common Stock | 1,854 | USD 386.11 | USD 715,848 | SEC filing ↗ |
| 2026-09-06 | Lakkaraju Roop Kalyan | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,536 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-06 | SCHWARTZ NORMAN D | Option exercise / conversion (M) | Bio-Rad A Common Stock | 3,455 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | SCHWARTZ NORMAN D | Tax withholding (F) | Bio-Rad A Common Stock | 1,854 | USD 386.11 | USD 715,848 | SEC filing ↗ |
| 2026-09-06 | Lakkaraju Roop Kalyan | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,536 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | Lakkaraju Roop Kalyan | Tax withholding (F) | Bio-Rad A Common Stock | 782 | USD 386.11 | USD 301,938 | SEC filing ↗ |
| 2026-09-06 | EVRAN SEDAT | Option exercise / conversion (M) | Bio-Rad A Common Stock | 864 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | EVRAN SEDAT | Tax withholding (F) | Bio-Rad A Common Stock | 277 | USD 386.11 | USD 106,952 | SEC filing ↗ |
| 2026-09-06 | ENLOE COURTNEY C | Option exercise / conversion (M) | Bio-Rad A Common Stock | 768 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | ENLOE COURTNEY C | Tax withholding (F) | Bio-Rad A Common Stock | 305 | USD 386.11 | USD 117,764 | SEC filing ↗ |
| 2026-09-06 | ENGELHARDT EVA ANETTE | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,152 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | ENGELHARDT EVA ANETTE | Tax withholding (F) | Bio-Rad A Common Stock | 485 | USD 386.11 | USD 187,263 | SEC filing ↗ |
| 2026-09-06 | BARRY JAMES | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,056 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | BARRY JAMES | Tax withholding (F) | Bio-Rad A Common Stock | 470 | USD 386.11 | USD 181,472 | SEC filing ↗ |
| 2026-09-06 | Allison Schwartz | Option exercise / conversion (M) | Bio-Rad A Common Stock | 92 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-06 | Allison Schwartz | Tax withholding (F) | Bio-Rad A Common Stock | 34 | USD 386.11 | USD 13,128 | SEC filing ↗ |
| 2026-09-05 | SCHWARTZ NORMAN D | Option exercise / conversion (M) | Bio-Rad A Common Stock | 4,109 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | SCHWARTZ NORMAN D | Tax withholding (F) | Bio-Rad A Common Stock | 2,876 | USD 386.11 | USD 1,110,452 | SEC filing ↗ |
| 2026-09-05 | Mehta Rajat | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,826 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | Mehta Rajat | Tax withholding (F) | Bio-Rad A Common Stock | 737 | USD 386.11 | USD 284,563 | SEC filing ↗ |
| 2026-09-05 | Lakkaraju Roop Kalyan | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,370 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | Lakkaraju Roop Kalyan | Tax withholding (F) | Bio-Rad A Common Stock | 559 | USD 386.11 | USD 215,835 | SEC filing ↗ |
| 2026-09-05 | EVRAN SEDAT | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,027 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | EVRAN SEDAT | Tax withholding (F) | Bio-Rad A Common Stock | 329 | USD 386.11 | USD 127,030 | SEC filing ↗ |
| 2026-09-05 | ENLOE COURTNEY C | Option exercise / conversion (M) | Bio-Rad A Common Stock | 685 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | ENLOE COURTNEY C | Tax withholding (F) | Bio-Rad A Common Stock | 246 | USD 386.11 | USD 94,983 | SEC filing ↗ |
| 2026-09-05 | ENGELHARDT EVA ANETTE | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,027 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | ENGELHARDT EVA ANETTE | Tax withholding (F) | Bio-Rad A Common Stock | 369 | USD 386.11 | USD 142,475 | SEC filing ↗ |
| 2026-09-05 | DiVincenzo Jonathan P. | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,712 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | DiVincenzo Jonathan P. | Tax withholding (F) | Bio-Rad A Common Stock | 668 | USD 386.11 | USD 257,921 | SEC filing ↗ |
| 2026-09-05 | BARRY JAMES | Option exercise / conversion (M) | Bio-Rad A Common Stock | 1,027 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-05 | BARRY JAMES | Tax withholding (F) | Bio-Rad A Common Stock | 369 | USD 386.11 | USD 142,475 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | BIO BIO.B |
| CIK | 0000012208 |
| Sector | Healthcare |
| Industry | Medical Devices Yahoo Finance |
| SEC SIC | 3826 Laboratory Analytical Instruments |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 591 transaction lines from 2020-04-08 to 2026-09-06 0 P purchase lines · 56 S sale lines · 535 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.