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Matthew B. Klein

CIK 1808968 · CHIEF EXECUTIVE OFFICER · last filed 2026-05-26

Matthew B. Klein is a CHIEF EXECUTIVE OFFICER who has filed 65 SEC Form 4 insider transactions across 2 companies since 2020. The most recent filing, for CLPT, was dated May 26, 2026. Across all open-market trades the lifetime net is −$7.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $30.5M 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

$30.49M

Companies

2

Total Filings

65

Lifetime Open-Market Net

-$7.40M

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
CLPT Director 46,935 $14.31 $671.6K -$185.4K 9 2026-05-26
PTCT CHIEF EXECUTIVE OFFICER 398,670 $74.79 $29.82M -$7.21M 32 2026-05-15

Recent Filings

65 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
2026-05-26 CLPT Mixed −16,000 -$185.4K EDGAR
2026-05-21 CLPT Notice (144) −16,000 -$185.4K EDGAR
2026-05-21 CLPT Exer (M) +12,417 $0 EDGAR
2026-05-15 PTCT Mixed −72 -$917.2K EDGAR
2026-05-14 PTCT Notice (144) −2,572 -$186.4K EDGAR
2026-05-14 PTCT Notice (144) −10,000 -$730.8K EDGAR
2026-04-23 PTCT Sell (S) −2,850 -$202.1K EDGAR
2026-04-21 PTCT Notice (144) −2,850 -$202.2K EDGAR
2026-03-13 PTCT Mixed +9,838 -$170.6K EDGAR
2026-03-12 PTCT Notice (144) −2,662 -$170.6K EDGAR
Showing 1–10 of 65
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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.