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Who

Melinda Litherland Pei

Director

Company insider

Files Form 4 as: Director, Rapid Micro Biosystems; Director, Bio-Rad Laboratories.

In numbers

Trades disclosed
31
Buys
4
Sells
0
Bought
$41K
Sold
$0
Companies
2
Companies where not an officer
2
First trade
14 Jul 2021
Last trade
29 May 2026
Last filed
2 Jun 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
RPID Rapid Micro BiosystemsDirector · Life-science tools · last 29 May 20264 buys · 0 sells
BIO Bio-Rad LaboratoriesDirector · Life-science tools · last 21 Apr 20260 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
02Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
29 May 2026filed 2 Jun 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code A$25K12,787 at $1.96filing
29 May 2026filed 2 Jun 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—12,787 at $0.00filing
29 May 2026filed 2 Jun 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—12,787 at $0.00filing
29 May 2026filed 2 Jun 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—12,787 at $0.00filing
29 May 2026filed 2 Jun 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—12,787 at $0.00filing
29 May 2026filed 2 Jun 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code A$25K12,787 at $1.96filing
21 May 2026filed 26 May 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code A—19,300 at $0.00filing
21 May 2026filed 26 May 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—38,700 at $0.00filing
21 May 2026filed 26 May 2026RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—38,700 at $0.00filing
21 May 2026filed 26 May 2026RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code A—19,300 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad LaboratoriesLife-science toolsSEC FORM 4 Code M—407 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code A—369 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code M—407 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code A—369 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code M—407 at $0.00filing
21 Apr 2026filed 23 Apr 2026BIO Bio-Rad LaboratoriesLife-science toolsSEC FORM 4 Code M—407 at $0.00filing
22 May 2025filed 27 May 2025RPID Rapid Micro Biosystemsoption or derivative · Life-science toolsSEC FORM 4 Code A—28,650 at $0.00filing
22 May 2025filed 27 May 2025RPID Rapid Micro BiosystemsLife-science toolsSEC FORM 4 Code A—14,300 at $0.00filing
22 Apr 2025filed 24 Apr 2025BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code A—407 at $0.00filing
22 Apr 2025filed 24 Apr 2025BIO Bio-Rad Laboratoriesoption or derivative · Life-science toolsSEC FORM 4 Code M—308 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Health Care4

Buys in green, sells in red, by the company’s sector.

Related people

Norman D. SchwartzChairman & CEO · Chairman & CEO at Bio-Rad Laboratories, filing Form 4 there in the last year
Roop Kalyan LakkarajuEVP, Chief Financial Officer · EVP, Chief Financial Officer at Bio-Rad Laboratories, filing Form 4 there in the last year
Jonathan P. DiVincenzoPresident & COO · President & COO at Bio-Rad Laboratories, filing Form 4 there in the last year
Schwartz AllisonDirector · Director at Bio-Rad Laboratories, filing Form 4 there in the last year
Sedat EvranEVP, Global Supply Chain · EVP, Global Supply Chain at Bio-Rad Laboratories, filing Form 4 there in the last year