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Brian F. Sullivan

CIK 940454 · Chief Executive Officer · last filed 2026-08-18

Brian F. Sullivan is a Chief Executive Officer who has filed 78 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for CELC, was dated Aug 18, 2026. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $229.1M across reported positions. 52 SEC filings were submitted jointly with ENTEGRIS INC.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$229.15M

Companies

3

Total Filings

78

Lifetime Open-Market Net

-$1.23M

Filer Profile

Reported Address
16305 36TH AVENUE N
MINNEAPOLIS, MN 55446
State of Incorporation
MN
Formerly Known As
SULLIVAN BRIAN F (1997–2017)
Related Filers
ENTEGRIS INC — 52 joint filings, latest 2021-05-21
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
CELC Chief Executive Officer 2,252,941 $95.70 $215.61M $1.50M 27 2026-08-18
ENTG Director 97,591 $138.74 $13.54M -$2.84M 47 2021-05-21
Virtual Radiologic CORP (VRAD) Delisted Director 11,732 — — $113.5K 3 2010-05-17

Recent Filings

78 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-18 CELC Grant (A) +80,000 $0 EDGAR
2025-09-04 CELC Exer (X) +104,340 $839.9K EDGAR
2025-08-20 CELC Grant (A) — $0 EDGAR
2025-04-15 CELC Gift (G) — $0 EDGAR
2025-03-05 CELC Gift (G) — $0 EDGAR
2024-08-22 CELC Mixed — $0 EDGAR
2024-04-30 CELC Gift (G) — $0 EDGAR
2024-03-20 CELC Gift (G) — $0 EDGAR
2024-02-01 CELC Gift (G) — $0 EDGAR
2024-01-04 CELC Grant (A) — $0 EDGAR
Showing 1–10 of 78
Page 1 of 8
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.