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Who

William W. Ericson

Director

Company insider

Files Form 4 as: Director, Pacific Biosciences of California; Director and 10% owner, Adamas Pharmaceuticals; Director and 10% owner, Rocket Fuel; 10% owner, Rally Software Development.

In numbers

Trades disclosed
118
Buys
21
Sells
15
Bought
$13.8M
Sold
$152.7M
Companies
4
Companies where not an officer
4
First trade
26 Oct 2010
Last trade
3 Jun 2026
Last filed
4 Jun 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
PACB Pacific Biosciences of CaliforniaDirector · Life-science tools · last 3 Jun 202612 buys · 2 sells
Adamas PharmaceuticalsDirector, 10% owner · last 24 Nov 20219 buys · 10 sells
Rocket FuelDirector, 10% owner · last 6 Sep 20170 buys · 2 sells
Rally Software Development10% owner · last 30 Jul 20130 buys · 1 sell

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
3 Jun 2026filed 4 Jun 2026PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—223,492 at $0.00filing
3 Jun 2026filed 4 Jun 2026PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—223,492 at $0.00filing
4 Jun 2025filed 6 Jun 2025PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—65,000 at $0.00filing
18 Jun 2024filed 20 Jun 2024PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—32,179 at $0.00filing
18 Jun 2024filed 20 Jun 2024PACB Pacific Biosciences of CaliforniaLife-science toolsSEC FORM 4 Code A—22,821 at $0.00filing
24 May 2023filed 26 May 2023PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—25,775 at $0.00filing
15 Mar 2023filed 17 Mar 2023PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code M—25,000 at $0.00filing
15 Mar 2023filed 17 Mar 2023PACB Pacific Biosciences of CaliforniaLife-science toolsSEC FORM 4 Code M$64K25,000 at $2.54filing
15 Mar 2023filed 17 Mar 2023PACB Pacific Biosciences of CaliforniaLife-science toolsSEC FORM 4 Sold$67K7,541 at $8.90filing
25 May 2022filed 27 May 2022PACB Pacific Biosciences of Californiaoption or derivative · Life-science toolsSEC FORM 4 Code A—63,015 at $0.00filing
17 Mar 2022filed 13 Apr 2022PACB Pacific Biosciences of CaliforniaLife-science toolsSEC FORM 4 Code J—4,848,397filing
17 Mar 2022filed 13 Apr 2022PACB Pacific Biosciences of CaliforniaLife-science toolsSEC FORM 4 Code J—1,268filing
24 Nov 2021filed 24 Nov 2021Adamas Pharmaceuticalsoption or derivativeSEC FORM 4 Code D—10,000filing
24 Nov 2021filed 24 Nov 2021Adamas Pharmaceuticalsoption or derivativeSEC FORM 4 Code D—10,000filing
24 Nov 2021filed 24 Nov 2021Adamas Pharmaceuticalsoption or derivativeSEC FORM 4 Code D—10,000filing
24 Nov 2021filed 24 Nov 2021Adamas PharmaceuticalsSEC FORM 4 Code U—10,000filing
24 Nov 2021filed 24 Nov 2021Adamas PharmaceuticalsSEC FORM 4 Code U—4,031,804filing
24 Nov 2021filed 24 Nov 2021Adamas PharmaceuticalsSEC FORM 4 Code U—6,043filing
24 Nov 2021filed 24 Nov 2021Adamas PharmaceuticalsSEC FORM 4 Code U—3,146filing
24 Nov 2021filed 24 Nov 2021Adamas PharmaceuticalsSEC FORM 4 Code U—25,661filing

News

Head-To-Head Analysis: Pacific Biosciences of California (NASDAQ:PACB) & Simulations Plus (NASDAQ:SLP)PACB · tickerreport.com · 21 Oct 2026

0 headlines in the last 90 days name William W. Ericson; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care14
Not placed22

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

Related people

James R. Gibson IIOfficer · Officer at Pacific Biosciences Of California, filing Form 4 there in the last year
Mark Van OeneOfficer · Officer at Pacific Biosciences Of California, filing Form 4 there in the last year
Randall S. LivingstonDirector · Director at Pacific Biosciences Of California, filing Form 4 there in the last year
Marshall MohrDirector · Director at Pacific Biosciences Of California, filing Form 4 there in the last year
Christopher M. SmithDirector · Director at Pacific Biosciences Of California, filing Form 4 there in the last year