PTCT · Insider Trading

PTC Therapeutics, Inc.

Full PTCT quote
Iron condor setupsExpected moveIV rank historyFibonacci levelsInsider trading

Every open-market purchase and sale reported by PTCT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
28
code S
Reporting Insiders
18
current holders
PTCT — Recent Form 4 Transactions (latest 2026-10-16)
FiledInsiderRole TypeSharesValue
2026-10-16 Michael Schmertzler Director Sell −2,500 −$149.04K
2026-10-13 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$4.77K
2026-10-09 Michael Schmertzler Director Sell −2,500 −$158.48K
2026-10-07 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$51.07K
2026-10-02 Glenn Jr Md Phd Steele Director MIXED — −$647.16K
2026-09-18 Michael Schmertzler Director Sell −20,000 −$1.35M
2026-09-11 Michael Schmertzler Director Sell −20,000 −$1.35M
2026-08-28 Michael Schmertzler Director Sell −25,000 −$1.81M
2026-08-21 Michael Schmertzler Director Sell −25,000 −$1.81M
2026-08-19 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$131.86K
2026-08-06 Matthew B. Klein CHIEF EXECUTIVE OFFICER Sell −10,292 −$705.72K
2026-08-06 Matthew B. Klein CHIEF EXECUTIVE OFFICER Sell −10,292 −$705.72K
2026-07-30 Hege Elisabeth Sollie-Zetlmayer Director A +6,000 —
2026-07-16 Pierre Gravier CHIEF FINANCIAL OFFICER Sell −3,494 −$280.74K
2026-07-13 Mary L. Smith Director MIXED — −$744.99K
2026-07-13 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER MIXED — −$107.70K
2026-07-08 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$211.87K
2026-07-08 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER MIXED — −$2.28M
2026-06-26 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER MIXED — −$1.25M
2026-06-24 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER MIXED — −$1.31M
2026-06-22 Christine Marie Utter SVP, CHIEF ACCOUNTING OFFICER MIXED — −$981.74K
2026-06-22 Mark Elliott Boulding EXEC. VP AND CLO MIXED +60 −$333.17K
2026-06-12 Eric Pauwels CHIEF BUSINESS OFFICER MIXED −3,711 −$1.28M
2026-05-19 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$130.72K
2026-05-15 Matthew B. Klein CHIEF EXECUTIVE OFFICER MIXED −72 −$917.15K
2026-05-12 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$114.82K
2026-04-23 Matthew B. Klein CHIEF EXECUTIVE OFFICER Sell −2,850 −$202.09K
2026-04-08 Mark Elliott Boulding EXEC. VP AND CLO MIXED — −$68.01K
2026-04-06 Lee Scott Golden EVP & CHIEF MEDICAL OFFICER Sell −829 −$56.36K
2026-04-03 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER Sell −52,003 −$3.59M
2026-03-26 Jessica Caroline Chutter Director A +7,333 —
2026-03-13 Matthew B. Klein CHIEF EXECUTIVE OFFICER MIXED +9,838 −$170.58K
2026-03-12 Stephanie Okey Director MIXED — −$551.62K
2026-03-09 Stephanie Okey Director Sell −6,333 −$401.39K
2026-03-09 Lee Scott Golden EVP & CHIEF MEDICAL OFFICER Sell −10,000 −$633.80K
2026-03-09 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER Sell −3,989 −$252.82K
2026-02-23 Mark Elliott Boulding EXEC. VP AND CLO Sell −3,019 −$209.76K
2026-02-20 Eric Pauwels CHIEF BUSINESS OFFICER Sell −3,019 −$209.40K
2026-02-20 Pierre Gravier CHIEF FINANCIAL OFFICER Sell −2,992 −$207.53K
2026-02-20 Lee Scott Golden EVP & CHIEF MEDICAL OFFICER Sell −2,484 −$172.29K
2026-02-20 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER Sell −3,121 −$216.47K
2026-02-20 Christine Marie Utter SVP, CHIEF ACCOUNTING OFFICER Sell −2,494 −$172.98K
2026-02-20 Matthew B. Klein CHIEF EXECUTIVE OFFICER Sell −7,371 −$511.25K
2026-02-19 Mark Elliott Boulding EXEC. VP AND CLO MIXED −3,081 −$336.35K
2026-01-12 Matthew B. Klein CHIEF EXECUTIVE OFFICER Sell −2,514 −$192.20K
2026-01-12 Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER Sell −940 −$71.86K
2026-01-12 Christine Marie Utter SVP, CHIEF ACCOUNTING OFFICER Sell −1,034 −$79.05K
2026-01-12 Lee Scott Golden EVP & CHIEF MEDICAL OFFICER Sell −866 −$66.21K
2026-01-12 Eric Pauwels CHIEF BUSINESS OFFICER Sell −7,348 −$565.95K
2026-01-12 Mark Elliott Boulding EXEC. VP AND CLO Sell −6,347 −$489.08K
PTCT — Current Insider Holders
InsiderRole Shares HeldValue
Michael Schmertzler Director 1,454,860 $87.25M
Matthew B. Klein CHIEF EXECUTIVE OFFICER 383,868 $23.02M
Mark Elliott Boulding EXEC. VP AND CLO 105,272 $6.31M
Eric Pauwels CHIEF BUSINESS OFFICER 90,977 $5.46M
Christine Marie Utter SVP, CHIEF ACCOUNTING OFFICER 89,885 $5.39M
Pierre Gravier CHIEF FINANCIAL OFFICER 83,986 $5.04M
Lee Scott Golden EVP & CHIEF MEDICAL OFFICER 79,115 $4.74M
Neil Gregory Almstead CHIEF TECHNICAL OPS OFFICER 63,198 $3.79M
Hege Elisabeth Sollie-Zetlmayer Director 52,526 $3.15M
Glenn Jr Md Phd Steele Director 34,500 $2.07M
Jerome B Zeldis Director 22,500 $1.35M
David P Southwell Director 22,500 $1.35M
Mary L. Smith Director 21,813 $1.31M
Allan Steven Jacobson Director 21,451 $1.29M
Alethia Young Director 21,067 $1.26M
Emma Reeve Director 10,666 $639.64K
Stephanie Okey Director 8,000 $479.76K
Jessica Caroline Chutter Director 4,000 $239.88K
PTCT Insider Trading FAQ
Who are the insiders at PTCT?
18 officers, directors and 10%+ beneficial owners currently report holdings in PTCT via SEC Form 4.
Are PTCT insiders buying or selling?
Across the 50 most recent Form 4 filings for PTCT, 0 were open-market purchases (code P) and 28 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is PTCT insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent PTCT filing is dated 2026-10-16.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the PTCT quote page; the site-wide leaderboard is on the insider transactions hub.

More on PTCT
PTCT full quote Insider Transactions Hub (all symbols) PTCT iron condor setups PTCT expected move PTCT IV rank history PTCT Fibonacci levels

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