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John James Sullivan

CIK 1305784 · President and CEO · last filed 2025-12-05

John James Sullivan is a President and CEO who has filed 90 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing, for MLAB, was dated Dec 5, 2025. Across all open-market trades the lifetime net is −$23.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $7.1M across reported positions.

"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

$7.08M

Companies

1

Total Filings

90

Lifetime Open-Market Net

-$23.46M

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
MLAB Director 70,062 $101.10 $7.08M -$23.46M 90 2025-12-05

Recent Filings

90 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
2025-12-05 MLAB Gift (G) −2,000 $0 EDGAR
2025-08-18 MLAB Mixed +1,404 $0 EDGAR
2024-11-25 MLAB Gift (G) −2,000 $0 EDGAR
2024-09-06 MLAB Exer (M) +1,074 $0 EDGAR
2024-08-19 MLAB Grant (A) — $0 EDGAR
2024-04-03 MLAB E — $0 EDGAR
2023-11-14 MLAB Gift (G) −2,000 $0 EDGAR
2023-09-06 MLAB Exer (M) — $0 EDGAR
2023-08-16 MLAB Exer (M) +754 $0 EDGAR
2023-06-21 MLAB Mixed +9 -$813 EDGAR
Showing 1–10 of 90
Page 1 of 9
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.