Mark Elliott Boulding Insider Trading Activity

Corporate InsiderVP · CIK 1578852

57

Total trades

$7.5M

Total volume

May 15, 2026

Last activity

PTCT

PTC THERAPEUTICS, INC.

Mark Elliott Boulding has been net-selling over the last 12 months with 0 purchases and 57 sales across 1 company.

PTCT is the most-traded position with 57 trades. The largest single transaction was a sale of PTCT for $1.4M on Sep 12, 2025.

Performance Scorecard

Forward stock performance after each transaction by Mark Elliott Boulding. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIODAVG BUY RETURNAVG SELL AVOIDEDSUCCESS RATETRADES
30 days—-1.0%57%51
90 days—-5.7%41%49
120 days—-5.1%48%42

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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PTCT · PTC THERAPEUTICS, INC.

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Recent Trades

Showing the 50 most recent of 57 disclosed trades.

DATETICKERTYPESHARESPRICEVALUEROLE
May 15, 2026PTCTSell456$72.67$33KVP
May 15, 2026PTCTSell2,356$72.08$170KVP
May 8, 2026PTCTSell1,900$79.31$151KVP
May 8, 2026PTCTSell600$79.28$48KVP
May 8, 2026PTCTSell200$78.00$16KVP
May 8, 2026PTCTSell840$78.23$66KVP
Apr 6, 2026PTCTSell822$68.91$57KVP
Apr 6, 2026PTCTSell1,443$69.75$101KVP
Feb 19, 2026PTCTSell212$68.54$15KVP
Feb 19, 2026PTCTSell588$68.54$40KVP
Feb 19, 2026PTCTSell1,629$69.82$114KVP
Feb 19, 2026PTCTSell590$69.82$41KVP
Feb 18, 2026PTCTSell3,081$69.36$214KVP
Feb 17, 2026PTCTSell2,811$69.29$195KVP
Feb 17, 2026PTCTSell2$70.13$140.26VP
Jan 9, 2026PTCTSell107$79.52$9KVP
Jan 9, 2026PTCTSell1,521$77.46$118KVP
Jan 9, 2026PTCTSell686$78.71$54KVP
Jan 8, 2026PTCTSell2,482$76.56$190KVP
Jan 8, 2026PTCTSell265$77.07$20KVP
Jan 8, 2026PTCTSell1,286$76.45$98KVP
Jan 7, 2026PTCTSell269$77.92$21KVP
Jan 7, 2026PTCTSell1,503$77.48$116KVP
Jan 7, 2026PTCTSell1,638$77.11$126KVP
Jan 7, 2026PTCTSell949$77.91$74KVP
Jan 7, 2026PTCTSell38$78.60$3KVP
Jan 7, 2026PTCTSell471$77.10$36KVP
Jan 7, 2026PTCTSell11$78.98$868.78VP
Jan 6, 2026PTCTSell1,739$76.95$134KVP
Jan 5, 2026PTCTSell1,035$76.10$79KVP
Jan 5, 2026PTCTSell1,123$74.92$84KVP
Jan 5, 2026PTCTSell108$76.79$8KVP
Nov 17, 2025PTCTSell1,843$75.64$139KVP
Nov 17, 2025PTCTSell777$76.53$59KVP
Nov 17, 2025PTCTSell192$77.18$15KVP
Oct 7, 2025PTCTSell1,757$62.89$110KVP
Oct 7, 2025PTCTSell1,306$63.80$83KVP
Oct 7, 2025PTCTSell312$64.97$20KVP
Oct 6, 2025PTCTSell2,266$65.07$147KVP
Oct 3, 2025PTCTSell824$65.73$54KVP
Oct 3, 2025PTCTSell3,100$64.43$200KVP
Oct 3, 2025PTCTSell6,124$65.47$401KVP
Oct 3, 2025PTCTSell7,400$66.44$492KVP
Oct 3, 2025PTCTSell1,500$67.15$101KVP
Oct 3, 2025PTCTSell536$64.43$35KVP
Oct 3, 2025PTCTSell906$66.63$60KVP
Oct 3, 2025PTCTSell550$64.44$35KVP
Oct 3, 2025PTCTSell838$65.72$55KVP
Oct 3, 2025PTCTSell877$66.67$58KVP
Sep 12, 2025PTCTSell544$62.09$34KVP

Top Companies Traded

TICKERCOMPANYTRADESTOTAL VOLUME
PTCTPTC THERAPEUTICS, INC.57$7.5M

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