Insider Trading › BIO › Insiders
BIO-RAD LABORATORIES, INC.
BIO·NYSE·
United States·Insider activity
United States·Insider activity$367.92
-0.91 (-0.25%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
BIO
Insider purchases and sales on the price
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
BIOS&P 500 (rebased)
Insider BuyInsider SellForm 144 · planned sale
Loading price history…
Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
In the last 180 days, BIO insiders filed 0 purchases ($0) and 1 sale ($136K) on the open market, by 1 insider. Newest filing May 13, 2026 (4 months ago).
Net Insider Buying by Quarter
Shares bought (+) or sold (−) on the open market by BIO insiders · Form 4 · last two years
On Record
$0Purchases · 180 days
$136KSales · 180 days
25Open-market transactions on record
1Insiders filing · 180 days
Purchases (code P) and sales (code S) of BIO common stock reported on Form 4, with Form 5 annual catch-ups. Grants, option exercises, gifts and tax withholding are not shown. Dollars are shares × the stated price; a price outside anything the stock traded at that day is withheld (n/c).
Insider Transactions
25 on record · newest trade first
AllPurchasesSalesOfficers & directors
| Insider | Type | Shares | Price | Value | Held after | Traded | Filed | |
|---|---|---|---|---|---|---|---|---|
| ENGELHARDT EVA ANETTEEVP, President, CDG | Sale | −550 | $246.54 | $136K | 346direct | May 11, 2026 | May 13, 2026 | Form 4 ↗ |
| TSINGOS CHRISTINE AChief Financial Officer | Sale | −3,000 | $80.29 | $241K | 1,695direct | Aug 15, 2007 | Aug 16, 2007 | Form 4 ↗ |
| STARK JAMES RController | Sale | −5,790 | $73.99 | $428K | 0direct | Jun 8, 2007 | Jun 12, 2007 | Form 4 ↗ |
| CRUTCHFIELD BRADFORDVice President | Sale | −7,500 | $74.30 | $557K | 2,924direct | Jun 4, 2007 | Jun 6, 2007 | Form 4 ↗ |
| CRUTCHFIELD BRADFORDVice President | Sale | −700 | $74.30 | $52K | 2,924direct | Jun 4, 2007 | Jun 6, 2007 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −2,200 | $71.21 | $157K | 9,781direct | Sep 11, 2006 | Sep 12, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −800 | $71.44 | $57K | 9,781direct | Sep 11, 2006 | Sep 12, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −1,000 | $71.21 | $71K | 9,781direct | Sep 11, 2006 | Sep 12, 2006 | Form 4 ↗ |
| TSINGOS CHRISTINE AChief Financial Officer | Sale | −3,500 | $73.66 | $258K | 695direct | Sep 5, 2006 | Sep 6, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −2,400 | $71.01 | $170K | 9,781direct | Aug 25, 2006 | Aug 29, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −1,600 | $70.55 | $113K | 9,781direct | Aug 21, 2006 | Aug 22, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −2,028 | $70.38 | $143K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −1,000 | $70.38 | $70K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −1,441 | $70.38 | $101K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −500 | $71.39 | $36K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −986 | $70.38 | $69K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −1,687 | $71.31 | $120K | 9,781direct | Aug 18, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −800 | $71.21 | $57K | 9,781direct | Aug 17, 2006 | Aug 21, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −7,500 | $69.70 | $523K | 10.6Kdirect | Aug 16, 2006 | Aug 18, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −6,000 | $69.70 | $418K | 10.6Kdirect | Aug 16, 2006 | Aug 18, 2006 | Form 4 ↗ |
| WADLER SANFORDVice President, General | Sale | −900 | $69.88 | $63K | 10.6Kdirect | Aug 16, 2006 | Aug 18, 2006 | Form 4 ↗ |
| STARK JAMES RController | Sale | −2,500 | $59.25 | $148K | 5,790direct | Mar 8, 2006 | Mar 9, 2006 | Form 4 ↗ |
| STARK JAMES RController | Sale | −4,000 | $59.25 | $237K | 5,790direct | Mar 8, 2006 | Mar 9, 2006 | Form 4 ↗ |
| STARK JAMES RController | Sale | −3,000 | $59.25 | $178K | 5,790direct | Mar 8, 2006 | Mar 9, 2006 | Form 4 ↗ |
| STARK JAMES RController | Sale | −400 | $56.90 | $23K | 5,790direct | Nov 30, 2004 | Aug 3, 2007 | Form 4 ↗ |
Source: SEC EDGAR Form 4 and Form 5 filings, SEC's quarterly bulk dataset through Jun 30, 2026, and KeyVex's half-hourly read of new filings since. Every row links its filing. Amendments are marked. Nothing here is a recommendation. All insider activity, market-wide →