Home

MICHAEL SCHMERTZLER

CIK 1288952 · last filed 2026-09-11

MICHAEL SCHMERTZLER is a corporate insider who has filed 56 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing shows the insider sold $1.4M of PTCT on Sep 11, 2026. Across all open-market trades the lifetime net is +$5.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $283.1M 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.

Loading insider history…
Disclosed Exposure

$283.07M

Companies

3

Total Filings

56

Lifetime Open-Market Net

$5.68M

Filer Profile

Reported Address
110 WASHINGTON STREET
SUITE 1300
CONSHOHOCKEN, PA 19428
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
PTCT Director 1,490,432 $65.65 $97.85M $5.84M 28 2026-09-11
HLNE 10%+ Owner 1,452,005 $93.03 $135.08M $0 7 2025-09-08
CYTK Director 723,487 $69.31 $50.14M -$162.9K 16 2010-06-04

Recent Filings

56 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
2026-09-11 PTCT Sell (S) −20,000 -$1.35M EDGAR
2026-09-09 PTCT Notice (144) −40,000 -$2.74M EDGAR
2026-08-28 PTCT Sell (S) −25,000 -$1.81M EDGAR
2026-08-25 PTCT Notice (144/A) −50,000 -$3.65M EDGAR
2026-08-21 PTCT Sell (S) −25,000 -$1.81M EDGAR
2026-08-19 PTCT Notice (144) −50,000 -$3.65M EDGAR
2026-01-06 PTCT Grant (A) +8,000 $0 EDGAR
2025-12-18 PTCT Exer (M) +24,000 $740.6K EDGAR
2025-09-08 HLNE Other (J) −25,005 -$25 EDGAR
2025-02-14 HLNE Other (J) −100,000 -$100 EDGAR
Showing 1–10 of 56
Page 1 of 6
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.