Bio-Rad Laboratories BIO Insider Ownership

NYSE BIO
$377.05 -3.07 (-0.81%)
As of: Sep 9, 2026 · 11:21 AM EDT

Insider Holdings by Owner

3.16Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
0.0045%
■0% pp QoQ
Shares Held by Insiders
1.22K
filed for Sep 2026
■0.00% QoQ
Shares Outstanding
27.02Mn
27,017,000 shares
Direct Holdings
1.22K
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
24
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 30 Sep, 2026

Bio-Rad Laboratories's three largest insider shareholders as of September 09, 2026 are Alice N Schwartz (TenPercentOwner, 1.78Mn shares), Alice N Schwartz (TenPercentOwner, 437.51K shares), Steven D Schwartz (TenPercentOwner, 38.24K shares).

Form 4 Holdings

Insiders Holding BIO

Insiders 24
Shares held 3.16Mn
Of outstanding 11.69%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Alice N Schwartz TenPercentOwner, Other 0 2,218,866 2,218,866 70.3% 27 Aug, 2024
2 Norman D Schwartz Chairman Ceo 807,651 13,006 820,657 26.0% 03 Sep, 2026
3 Steven D Schwartz TenPercentOwner 25,234 13,006 38,240 1.2% 28 Aug, 2024
4 Colleen Corey Evp, Global Human Resources 19,550 0 19,550 0.6% 08 Sep, 2025
5 Diane Dahowski Evp, Global Supply Chain 11,880 0 11,880 0.4% 05 Sep, 2023
6 Michael Crowley Evp, Gbl Commercial Operations 8,171 0 8,171 0.3% 17 Mar, 2025
7 Andrew J. Last Evp, Chief Operating Officer 7,559 0 7,559 0.2% 09 Sep, 2024
8 Schwartz Allison Director 5,526 0 5,526 0.2% 02 Sep, 2026
9 Annette Tumolo Executive Vice President 4,593 0 4,593 0.1% 12 Nov, 2021
10 Timothy S Ernst Evp, General Counsel Sec 3,397 0 3,397 0.1% 29 Feb, 2024
11 Simon May Evp, President, Lsg 3,105 0 3,105 0.1% 05 Sep, 2023
12 Roop Kalyan Lakkaraju Evp, Chief Financial Officer 2,564 0 2,564 0.1% 27 Apr, 2026
13 Ilan Daskal Evp, Chief Financial Officer 2,486 0 2,486 0.1% 04 Sep, 2023
14 Sedat Evran Evp, Global Supply Chain 2,233 0 2,233 0.1% 21 Oct, 2025
15 Dara Wright Evp, President, Cdg 1,827 0 1,827 0.1% 18 Dec, 2023
16 Greg K Hinckley Director 1,215 0 1,215 0.0% 23 Apr, 2026
17 Jonathan P. Divincenzo President Coo 919 0 919 0.0% 27 Oct, 2025
18 James Barry Evp, President, Lsg 781 0 781 0.0% 02 Sep, 2026
19 Courtney C Enloe Evp, General Counsel Sec 750 0 750 0.0% 27 Apr, 2026
20 Melinda Litherland Pei Director 715 0 715 0.0% 23 Apr, 2026
21 Jeffrey L Edwards Director 715 0 715 0.0% 23 Apr, 2026
22 Arnold A Pinkston Director 715 0 715 0.0% 23 Apr, 2026
23 Eva Anette Engelhardt Evp, President, Cdg 503 0 503 0.0% 25 Jul, 2026
24 Ajit Ramalingam Svp, Chief Accounting Officer 403 0 403 0.0% 05 Sep, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

9,754 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
25 Jul, 2026 Eva Anette Engelhardt Evp, President, Cdg Acquired M 246 $0.00 $0 592 Direct
25 Jul, 2026 Eva Anette Engelhardt Evp, President, Cdg Disposed F 89 $314.46 $27.99K 503 Direct
25 Jul, 2026 Eva Anette Engelhardt Evp, President, Cdg Disposed M 246 $0.00 $0 492 Direct
11 May, 2026 Eva Anette Engelhardt Evp, President, Cdg Disposed S 550 $246.54 $135.60K 346 Direct
24 Apr, 2026 Roop Kalyan Lakkaraju Evp, Chief Financial Officer Acquired M 1,078 $0.00 $0 2,984 Direct
24 Apr, 2026 Courtney C Enloe Evp, General Counsel Sec Acquired M 186 $0.00 $0 827 Direct
24 Apr, 2026 Roop Kalyan Lakkaraju Evp, Chief Financial Officer Disposed F 420 $287.84 $120.89K 2,564 Direct
24 Apr, 2026 Courtney C Enloe Evp, General Counsel Sec Disposed F 77 $287.84 $22.16K 750 Direct
24 Apr, 2026 Roop Kalyan Lakkaraju Evp, Chief Financial Officer Disposed M 1,078 $0.00 $0 2,156 Direct
24 Apr, 2026 Courtney C Enloe Evp, General Counsel Sec Disposed M 186 $0.00 $0 372 Direct
21 Apr, 2026 Greg K Hinckley Director Acquired M 407 $0.00 $0 1,215 Direct
21 Apr, 2026 Jeffrey L Edwards Director Acquired M 407 $0.00 $0 715 Direct
21 Apr, 2026 Arnold A Pinkston Director Acquired M 407 $0.00 $0 715 Direct
21 Apr, 2026 Arnold A Pinkston Director Acquired A 369 $0.00 $0 369 Direct
21 Apr, 2026 Jeffrey L Edwards Director Acquired A 369 $0.00 $0 369 Direct
21 Apr, 2026 Greg K Hinckley Director Acquired A 369 $0.00 $0 369 Direct
21 Apr, 2026 Arnold A Pinkston Director Disposed M 407 $0.00 $0 0 Direct
21 Apr, 2026 Jeffrey L Edwards Director Disposed M 407 $0.00 $0 0 Direct
21 Apr, 2026 Greg K Hinckley Director Disposed M 407 $0.00 $0 0 Direct
06 Nov, 2025 James Barry Evp, President, Lsg Disposed S 700 $306.18 $214.29K 510 Direct