Bio-Rad Laboratories, Inc. (BIO)

Bio Rad Laboratories Inc. has seen no insider trading activity within the last three months. The most recent transactions occurred in May 2026, involving proposed sales and one confirmed divestment by directors and officers. These historical filings reflect periodic equity liquidations by key stakeholders rather than current market engagement.
Ticker: BIO Exchange: NYS


Loading...
Purchase Sale Planned purchase Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Upgrade for signal details

Upgrade to see score, net flow, insiders and context.

Upgrade to see full signal details →

Insider trades have triggered activity signals for Bio-Rad Laboratories, Inc.. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
0.5
ENGELHARDT EVA ANETTE EVP, President, CDG Officer
Transaction date
Sale
Price
49.78
Quantity 74,213 +19.2%
Value US$4,430,840
0.5
EVA ENGELHARDT Officer Officer
Transaction date
Proposed sale
Price
313.70
Quantity 34,306
Value US$3,993,048
3.0
MICHAEL W CROWLEY Officer Officer
Transaction date
Proposed sale
Price
319.56
Quantity 776
Value US$247,979
2.4
BARRY JAMES EVP, President, LSG Officer
Transaction date
Sale
Price
306.18
Quantity 700 -57.9%
Value US$214,289
2.4
JAMES BARRY Officer Officer
Transaction date
Proposed sale
Price
306.18
Quantity 701
Value US$214,633
3.0
MICHAEL W CROWLEY Officer Officer
Transaction date
Proposed sale
Price
275.92
Quantity 1,488
Value US$410,572
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
247.06
Quantity 3,000 -26.9%
Value US$741,184
3.0
Crowley Michael Officer Officer
Transaction date
Proposed sale
Price
260.00
Quantity 3,000
Value US$780,000
2.1
Last Andrew J. Officer Officer
Transaction date
Proposed sale
Price
373.64
Quantity 3,000
Value US$1,120,934
2.1
Last Andrew J. Officer Officer
Transaction date
Proposed sale
Price
321.57
Quantity 1,600
Value US$514,505
2.1
Last Andrew J. EVP, Chief Operating Officer Officer
Transaction date
Sale
Price
329.94
Quantity 3,000 -28.4%
Value US$989,815
2.1
Last Andrew J. Officer Officer
Transaction date
Proposed sale
Price
329.94
Quantity 3,000
Value US$989,815
2.4
BARRY JAMES Officer Officer
Transaction date
Proposed sale
Price
330.49
Quantity 623
Value US$205,898
2.4
BARRY JAMES EVP, President, LSG Officer
Transaction date
Sale
Price
330.49
Quantity 623 -81.0%
Value US$205,898
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
281.91
Quantity 369 -5.3%
Value US$104,023
3.0
Crowley Michael Officer Officer
Transaction date
Proposed sale
Price
281.91
Quantity 369
Value US$104,023
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
330.55
Quantity 2,500 -42.4%
Value US$826,375
3.7
ERNST TIMOTHY S Officer Officer
Transaction date
Proposed sale
Price
330.55
Quantity 2,500
Value US$826,362
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
336.00
Quantity 3,000 -30.2%
Value US$1,008,000
3.0
Crowley Michael Officer Officer
Transaction date
Proposed sale
Price
336.00
Quantity 3,000
Value US$1,008,009
WRIGHT DARA Officer Officer
Transaction date
Proposed sale
Price
335.25
Quantity 1,838
Value US$616,181
WRIGHT DARA Officer Officer
Transaction date
Proposed sale
Price
299.16
Quantity 1,200
Value US$358,989
WRIGHT DARA EVP, President, CDG Officer
Transaction date
Planned sale
Price
299.16
Quantity 1,200 -44.5%
Value US$358,992
3.0
Crowley Michael Officer Officer
Transaction date
Proposed sale
Price
305.10
Quantity 642
Value US$195,873
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
305.10
Quantity 642 -8.5%
Value US$195,874
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
396.44
Quantity 377 -13.5%
Value US$149,458
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
395.76
Quantity 1,582 -36.2%
Value US$626,092
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
394.16
Quantity 391 -8.2%
Value US$154,117
3.7
ERNST TIMOTHY S Officer Officer
Transaction date
Proposed sale
Price
393.00
Quantity 2,350
Value US$923,550
3.7
ERNST TIMOTHY S Officer Officer
Transaction date
Proposed sale
Price
384.69
Quantity 300
Value US$115,407
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Planned sale
Price
384.69
Quantity 300 -11.0%
Value US$115,407
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
379.39
Quantity 500 -7.6%
Value US$189,695
3.0
Crowley Michael Officer Officer
Transaction date
Proposed sale
Price
379.39
Quantity 500
Value US$189,692
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Sale
Price
368.28
Quantity 181 -100.0%
Value US$66,659
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Sale
Price
368.49
Quantity 17 -8.7%
Value US$6,394
1.9
RAMALINGAM AJIT Officer Officer
Transaction date
Proposed sale
Price
368.96
Quantity 198
Value US$73,054
3.1
SCHWARTZ STEVEN D Large shareholder
Transaction date
Sale
Price
463.86
Quantity 320 -17.6%
Value US$148,435
3.1
SCHWARTZ STEVEN D Large shareholder
Transaction date
Sale
Price
463.86
Quantity 320 -17.6%
Value US$148,435
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
486.89
Quantity 746 -21.8%
Value US$363,220
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
486.08
Quantity 1,000 -22.6%
Value US$486,080
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Sale
Price
423.61
Quantity 0 -100.0%
Value US$161
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Sale
Price
422.28
Quantity 112 -99.7%
Value US$47,295
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Planned sale
Price
421.70
Quantity 267 -70.4%
Value US$112,594
1.9
RAMALINGAM AJIT SVP, Chief Accounting Officer Officer
Transaction date
Planned sale
Price
537.00
Quantity 518 -84.0%
Value US$278,166
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
750.05
Quantity 4,800 -51.1%
Value US$3,600,240
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
750.00
Quantity 500 -9.8%
Value US$375,000
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
748.84
Quantity 613 -10.7%
Value US$459,039
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
748.08
Quantity 433 -7.1%
Value US$323,919
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Planned sale
Price
760.26
Quantity 327 -26.2%
Value US$248,605
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
640.17
Quantity 196 -13.8%
Value US$125,542
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
640.92
Quantity 327 -18.8%
Value US$209,581
3.7
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
640.94
Quantity 400 -18.7%
Value US$256,376
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
580.67
Quantity 374 -9.3%
Value US$217,171
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
641.53
Quantity 246 -5.6%
Value US$157,816
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
640.78
Quantity 734 -14.4%
Value US$470,333
3.3
TUMOLO ANNETTE Executive Vice President Officer
Transaction date
Sale
Price
639.62
Quantity 220 -4.1%
Value US$140,716
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
521.86
Quantity 339 -1.6%
Value US$176,911
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
520.94
Quantity 5,668 -21.2%
Value US$2,952,688
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
519.89
Quantity 1,133 -4.1%
Value US$589,035
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
518.76
Quantity 5,392 -16.2%
Value US$2,797,154
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
517.64
Quantity 315 -0.9%
Value US$163,057
1.7
Magni Giovanni EVP, Chief Strategy Officer Officer
Transaction date
Sale
Price
518.81
Quantity 2,382 -16.1%
Value US$1,235,805
3.0
Crowley Michael EVP, GBL Commercial Operations Officer
Transaction date
Sale
Price
485.40
Quantity 1,500 -39.4%
Value US$728,100
HUTTON RONALD W Vice President and Treasurer Officer
Transaction date
Planned sale
Price
457.35
Quantity 443 -9.7%
Value US$202,606
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
370.12
Quantity 656 -59.0%
Value US$242,799
ERNST TIMOTHY S EVP, General Counsel & Sec Officer
Transaction date
Sale
Price
370.11
Quantity 1,250 -52.9%
Value US$462,638
STARK JAMES R VP, Corporate Controller Officer
Transaction date
Sale
Price
351.45
Quantity 848 -100.0%
Value US$298,030
3.3
TUMOLO ANNETTE Executive Vice President
Transaction date
Sale
Price
330.00
Quantity 522 -17.8%
Value US$172,260
1.4
HERTIA JOHN Executive Vice President
Transaction date
Sale
Price
329.00
Quantity 41 -0.2%
Value US$13,489
1.4
HERTIA JOHN Executive Vice President
Transaction date
Sale
Price
328.25
Quantity 797 -4.1%
Value US$261,615
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-05-28 2026-05-28 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
16,024
50.20
US$884,284
16,024 50.20 US$884,284
2026-05-13 2026-05-11 S Sale

EVP, President, CDG

Officer
74,213 +19.2%
49.78
US$4,430,840
74,213 +19.2% 49.78 US$4,430,840
2026-05-11 2026-05-11 PrS Proposed sale

Officer

Officer
34,306
313.70
US$3,993,048
34,306 313.70 US$3,993,048
2025-12-02 2025-12-02 PrS Proposed sale

Officer

Officer
776
319.56
US$247,979
776 319.56 US$247,979
2025-11-18 2025-11-18 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
760
301.04
US$228,793
760 301.04 US$228,793
2025-11-10 2025-11-06 S Sale

EVP, President, LSG

Officer
700 -57.9%
306.18
US$214,289
700 -57.9% 306.18 US$214,289
2025-11-06 2025-11-06 PrS Proposed sale

Officer

Officer
701
306.18
US$214,633
701 306.18 US$214,633
2025-08-05 2025-08-05 PrS Proposed sale

Officer

Officer
1,488
275.92
US$410,572
1,488 275.92 US$410,572
2025-03-18 2025-03-14 S Sale

EVP, GBL Commercial Operations

Officer
3,000 -26.9%
247.06
US$741,184
3,000 -26.9% 247.06 US$741,184
2025-03-13 2025-03-13 PrS Proposed sale

Officer

Officer
3,000
260.00
US$780,000
3,000 260.00 US$780,000
2025-03-11 2025-03-11 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
410
247.66
US$101,540
410 247.66 US$101,540
2024-11-06 2024-11-06 PrS Proposed sale

Officer

Officer
3,000
373.64
US$1,120,934
3,000 373.64 US$1,120,934
2024-09-12 2024-09-12 PrS Proposed sale

Officer

Officer
1,600
321.57
US$514,505
1,600 321.57 US$514,505
2024-09-10 2024-09-06 S Sale

EVP, Chief Operating Officer

Officer
3,000 -28.4%
329.94
US$989,815
3,000 -28.4% 329.94 US$989,815
2024-09-06 2024-09-06 PrS Proposed sale

Officer

Officer
3,000
329.94
US$989,815
3,000 329.94 US$989,815
2024-09-04 2024-09-04 PrS Proposed sale

Officer

Officer
623
330.49
US$205,898
623 330.49 US$205,898
2024-09-04 2024-09-04 S Sale

EVP, President, LSG

Officer
623 -81.0%
330.49
US$205,898
623 -81.0% 330.49 US$205,898
2024-08-27 2024-08-27 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
990
311.34
US$308,225
990 311.34 US$308,225
2024-06-14 2024-06-13 S Sale

EVP, GBL Commercial Operations

Officer
369 -5.3%
281.91
US$104,023
369 -5.3% 281.91 US$104,023
2024-06-13 2024-06-13 PrS Proposed sale

Officer

Officer
369
281.91
US$104,023
369 281.91 US$104,023
2024-02-29 2024-02-28 S Sale

EVP, General Counsel & Sec

Officer
2,500 -42.4%
330.55
US$826,375
2,500 -42.4% 330.55 US$826,375
2024-02-28 2024-02-28 PrS Proposed sale

Officer

Officer
2,500
330.55
US$826,362
2,500 330.55 US$826,362
2024-02-28 2024-02-27 S Sale

EVP, GBL Commercial Operations

Officer
3,000 -30.2%
336.00
US$1,008,000
3,000 -30.2% 336.00 US$1,008,000
2024-02-27 2024-02-27 PrS Proposed sale

Officer

Officer
3,000
336.00
US$1,008,009
3,000 336.00 US$1,008,009
2024-02-27 2024-02-27 PrS Proposed sale

Officer

Officer
1,838
335.25
US$616,181
1,838 335.25 US$616,181
2023-12-12 2023-12-12 PrS Proposed sale

Officer

Officer
1,200
299.16
US$358,989
1,200 299.16 US$358,989
2023-12-12 2023-12-12 PlS Planned sale

EVP, President, CDG

Officer
1,200 -44.5%
299.16
US$358,992
1,200 -44.5% 299.16 US$358,992
2023-11-28 2023-11-28 PrS Proposed sale

Officer

Officer
642
305.10
US$195,873
642 305.10 US$195,873
2023-11-28 2023-11-28 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
800
302.34
US$241,874
800 302.34 US$241,874
2023-11-28 2023-11-28 S Sale

EVP, GBL Commercial Operations

Officer
642 -8.5%
305.10
US$195,874
642 -8.5% 305.10 US$195,874
2023-08-31 2023-08-30 S Sale

EVP, General Counsel & Sec

Officer
377 -13.5%
396.44
US$149,458
377 -13.5% 396.44 US$149,458
2023-08-31 2023-08-30 S Sale

EVP, General Counsel & Sec

Officer
1,582 -36.2%
395.76
US$626,092
1,582 -36.2% 395.76 US$626,092
2023-08-31 2023-08-30 S Sale

EVP, General Counsel & Sec

Officer
391 -8.2%
394.16
US$154,117
391 -8.2% 394.16 US$154,117
2023-08-30 2023-08-30 PrS Proposed sale

Officer

Officer
2,350
393.00
US$923,550
2,350 393.00 US$923,550
2023-08-23 2023-08-23 PrS Proposed sale

Officer

Officer
300
384.69
US$115,407
300 384.69 US$115,407
2023-08-23 2023-08-23 PlS Planned sale

EVP, General Counsel & Sec

Officer
300 -11.0%
384.69
US$115,407
300 -11.0% 384.69 US$115,407
2023-06-16 2023-06-15 S Sale

EVP, GBL Commercial Operations

Officer
500 -7.6%
379.39
US$189,695
500 -7.6% 379.39 US$189,695
2023-06-15 2023-06-15 PrS Proposed sale

Officer

Officer
500
379.39
US$189,692
500 379.39 US$189,692
2023-06-07 2023-06-06 S Sale

SVP, Chief Accounting Officer

Officer
181 -100.0%
368.28
US$66,659
181 -100.0% 368.28 US$66,659
2023-06-07 2023-06-06 S Sale

SVP, Chief Accounting Officer

Officer
17 -8.7%
368.49
US$6,394
17 -8.7% 368.49 US$6,394
2023-06-06 2023-06-06 PrS Proposed sale

Officer

Officer
198
368.96
US$73,054
198 368.96 US$73,054
2024-05-01 2023-05-03 S Sale Large shareholder
320 -17.6%
463.86
US$148,435
320 -17.6% 463.86 US$148,435
2024-05-01 2023-05-03 S Sale Large shareholder
320 -17.6%
463.86
US$148,435
320 -17.6% 463.86 US$148,435
2023-03-08 2023-03-08 S Sale

EVP, General Counsel & Sec

Officer
746 -21.8%
486.89
US$363,220
746 -21.8% 486.89 US$363,220
2023-03-08 2023-03-08 S Sale

EVP, General Counsel & Sec

Officer
1,000 -22.6%
486.08
US$486,080
1,000 -22.6% 486.08 US$486,080
2022-11-14 2022-11-10 S Sale

SVP, Chief Accounting Officer

Officer
0 -100.0%
423.61
US$161
0 -100.0% 423.61 US$161
2022-11-14 2022-11-10 S Sale

SVP, Chief Accounting Officer

Officer
112 -99.7%
422.28
US$47,295
112 -99.7% 422.28 US$47,295
2022-11-14 2022-11-10 PlS Planned sale

SVP, Chief Accounting Officer

Officer
267 -70.4%
421.70
US$112,594
267 -70.4% 421.70 US$112,594
2022-08-08 2022-08-05 PlS Planned sale

SVP, Chief Accounting Officer

Officer
518 -84.0%
537.00
US$278,166
518 -84.0% 537.00 US$278,166
2021-11-15 2021-11-12 S Sale

Executive Vice President

Officer
4,800 -51.1%
750.05
US$3,600,240
4,800 -51.1% 750.05 US$3,600,240
2021-11-15 2021-11-11 S Sale

Executive Vice President

Officer
500 -9.8%
750.00
US$375,000
500 -9.8% 750.00 US$375,000
2021-11-15 2021-11-11 S Sale

Executive Vice President

Officer
613 -10.7%
748.84
US$459,039
613 -10.7% 748.84 US$459,039
2021-11-15 2021-11-11 S Sale

Executive Vice President

Officer
433 -7.1%
748.08
US$323,919
433 -7.1% 748.08 US$323,919
2021-08-05 2021-08-04 PlS Planned sale

EVP, General Counsel & Sec

Officer
327 -26.2%
760.26
US$248,605
327 -26.2% 760.26 US$248,605
2021-02-22 2021-02-19 S Sale

EVP, General Counsel & Sec

Officer
196 -13.8%
640.17
US$125,542
196 -13.8% 640.17 US$125,542
2021-02-22 2021-02-19 S Sale

EVP, General Counsel & Sec

Officer
327 -18.8%
640.92
US$209,581
327 -18.8% 640.92 US$209,581
2021-02-22 2021-02-19 S Sale

EVP, General Counsel & Sec

Officer
400 -18.7%
640.94
US$256,376
400 -18.7% 640.94 US$256,376
2020-12-17 2020-12-15 S Sale

EVP, GBL Commercial Operations

Officer
374 -9.3%
580.67
US$217,171
374 -9.3% 580.67 US$217,171
2020-11-10 2020-11-06 S Sale

Executive Vice President

Officer
246 -5.6%
641.53
US$157,816
246 -5.6% 641.53 US$157,816
2020-11-10 2020-11-06 S Sale

Executive Vice President

Officer
734 -14.4%
640.78
US$470,333
734 -14.4% 640.78 US$470,333
2020-11-10 2020-11-06 S Sale

Executive Vice President

Officer
220 -4.1%
639.62
US$140,716
220 -4.1% 639.62 US$140,716
2020-08-21 2020-08-19 S Sale

EVP, Chief Strategy Officer

Officer
339 -1.6%
521.86
US$176,911
339 -1.6% 521.86 US$176,911
2020-08-21 2020-08-19 S Sale

EVP, Chief Strategy Officer

Officer
5,668 -21.2%
520.94
US$2,952,688
5,668 -21.2% 520.94 US$2,952,688
2020-08-21 2020-08-19 S Sale

EVP, Chief Strategy Officer

Officer
1,133 -4.1%
519.89
US$589,035
1,133 -4.1% 519.89 US$589,035
2020-08-21 2020-08-19 S Sale

EVP, Chief Strategy Officer

Officer
5,392 -16.2%
518.76
US$2,797,154
5,392 -16.2% 518.76 US$2,797,154
2020-08-21 2020-08-19 S Sale

EVP, Chief Strategy Officer

Officer
315 -0.9%
517.64
US$163,057
315 -0.9% 517.64 US$163,057
2020-08-19 2020-08-18 S Sale

EVP, Chief Strategy Officer

Officer
2,382 -16.1%
518.81
US$1,235,805
2,382 -16.1% 518.81 US$1,235,805
2020-06-02 2020-06-01 S Sale

EVP, GBL Commercial Operations

Officer
1,500 -39.4%
485.40
US$728,100
1,500 -39.4% 485.40 US$728,100
2020-05-14 2020-05-13 PlS Planned sale

Vice President and Treasurer

Officer
443 -9.7%
457.35
US$202,606
443 -9.7% 457.35 US$202,606
2019-12-05 2019-12-04 S Sale ERNST TIMOTHY S

EVP, General Counsel & Sec

Officer
656 -59.0%
370.12
US$242,799
656 -59.0% 370.12 US$242,799
2019-12-05 2019-12-04 S Sale ERNST TIMOTHY S

EVP, General Counsel & Sec

Officer
1,250 -52.9%
370.11
US$462,638
1,250 -52.9% 370.11 US$462,638
2019-11-12 2019-11-11 S Sale STARK JAMES R

VP, Corporate Controller

Officer
848 -100.0%
351.45
US$298,030
848 -100.0% 351.45 US$298,030
2019-09-16 2019-09-12 S Sale

Executive Vice President

522 -17.8%
330.00
US$172,260
522 -17.8% 330.00 US$172,260
2019-09-13 2019-09-12 S Sale

Executive Vice President

41 -0.2%
329.00
US$13,489
41 -0.2% 329.00 US$13,489
2019-09-13 2019-09-12 S Sale

Executive Vice President

797 -4.1%
328.25
US$261,615
797 -4.1% 328.25 US$261,615