Matthew B. Klein

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

"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

$30.36M

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 $14.14 $663.7K -$185.4K 9 2026-05-26
PTCT CHIEF EXECUTIVE OFFICER 398,670 $74.49 $29.70M -$7.21M 32 2026-05-15

Recent Filings · Page 7 of 7

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
2021-04-21 PTCT Sell (S) −2,500 -$118.1K EDGAR
2021-01-20 PTCT Mixed -$129.5K EDGAR
2021-01-12 PTCT Mixed -$169.0K EDGAR
2021-01-08 PTCT Mixed +9,000 -$116.6K EDGAR
2020-04-17 PTCT Grant (A) +10,000 $0 EDGAR
Showing 6165 of 65
Page 7 of 7
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.