Home

CONSTANTINE S MACRICOSTAS

CIK 900574 · Executive Chairman · last filed 2026-04-15

CONSTANTINE S MACRICOSTAS is an Executive Chairman who has filed 97 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing, for PLAB, was dated Apr 15, 2026. Across all open-market trades the lifetime net is −$29.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $12.3M 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.

Loading insider history…
Disclosed Exposure

$12.35M

Companies

1

Total Filings

97

Lifetime Open-Market Net

-$29.42M

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
PLAB Director 414,617 $29.78 $12.35M -$29.42M 94 2026-04-15

Recent Filings

97 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
2026-04-15 PLAB Grant (A) +3,722 $0 EDGAR
2026-04-14 PLAB Notice (144) −50,000 -$2.29M EDGAR
2026-04-14 PLAB Sell (S) −50,000 -$2.27M EDGAR
2026-04-14 PLAB Gift (G) −50,000 $0 EDGAR
2026-01-07 PLAB Grant (A) +1,272 $0 EDGAR
2025-07-03 PLAB Sell (S) −29,500 -$595.9K EDGAR
2025-07-03 PLAB Notice (144) −29,500 -$600.0K EDGAR
2025-04-01 PLAB Notice (144) −29,500 -$600.0K EDGAR
2025-02-25 PLAB Gift (G) −1,000 $0 EDGAR
2025-02-19 PLAB Grant (A) +7,548 $0 EDGAR
Showing 1–10 of 97
Page 1 of 10
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.