WallStreetZenWallStreetZen

NASDAQ: PTCT
Ptc Therapeutics Inc Stock Ownership - Who owns Ptc Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Ptc Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Michael SchmertzlerDirector2026-10-142,118$59.52
$126.06kSell
Michael SchmertzlerDirector2026-10-14382$60.14
$22.97kSell
Mark Elliott BouldingCLO;EVP2026-10-09192$64.26
$12.34kSell
Mark Elliott BouldingCLO;EVP2026-10-09192$39.42
$7.57kBuy
Michael SchmertzlerDirector2026-10-0753$63.95
$3.39kSell
Michael SchmertzlerDirector2026-10-072,447$63.38
$155.09kSell
Mark Elliott BouldingCLO;EVP2026-10-06435$64.16
$27.91kSell
Mark Elliott BouldingCLO;EVP2026-10-06435$39.42
$17.15kBuy
Mark Elliott BouldingCLO;EVP2026-10-051,638$39.42
$64.57kBuy
Mark Elliott BouldingCLO;EVP2026-10-051,638$64.03
$104.88kSell

1 of 27

PTCT insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when PTCT insiders and whales buy or sell their stock.

PTCT Shareholders

What type of owners hold Ptc Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Michael Schmertzler6.10%5,098,336$305.75MInsider
Hbm Healthcare Investments Cayman Ltd2.92%2,441,504$146.42MInsider
Adam Koppel2.79%2,333,333$139.93MInsider
Suisse Ag 1. Credit2.70%2,256,882$135.35MInsider
Vulcan Ventures Inc2.04%1,701,731$102.05MInsider
Matthew B. Klein0.46%383,868$23.02MInsider
Richard Aldrich0.36%300,000$17.99MInsider
Stuart Walter Peltz0.27%221,865$13.31MInsider
Mark Elliott Boulding0.13%105,272$6.31MInsider
Pierre Gravier0.10%83,986$5.04MInsider

1 of 3

PTCT vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PTCT0.12%18.81%Net SellingNet Selling
COGT0.11%8.01%Net SellingNet Buying
SRRK0.11%68.79%Net BuyingNet Buying
ERAS0.08%24.59%Net Buying
CRSP0.08%36.03%Net SellingNet Selling
View Top Biotech Stocks

Ptc Therapeutics Stock Ownership FAQ

Who owns Ptc Therapeutics?

Ptc Therapeutics (NASDAQ: PTCT) is owned by 0.12% institutional shareholders, 18.81% Ptc Therapeutics insiders, and 81.07% retail investors. Michael Schmertzler is the largest individual Ptc Therapeutics shareholder, owning 5.10M shares representing 6.10% of the company. Michael Schmertzler's Ptc Therapeutics shares are currently valued at $310.39M.

If you're new to stock investing, here's how to buy Ptc Therapeutics stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.