PTC Therapeutics (PTCT) CTO exercises options and sells stock under plan
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
PTC Therapeutics, Inc. chief technical operations officer Neil Gregory Almstead reported a series of option exercises and share sales in PTCT common stock. On June 24–25, 2026, he exercised stock options for a total of 26,283 shares at exercise prices including $38.10 and $39.42 per share.
Over the same two days, he sold 26,283 shares of common stock in open-market transactions at prices generally in the mid‑$80s, with individual sale prices such as $87.00 and weighted‑average prices around $85–$86 per share. Following these transactions, Almstead directly holds 60,137 shares of PTCT common stock.
The filing notes that these transactions were carried out under a written Rule 10b5-1 trading plan adopted on November 11, 2025, indicating they were pre‑scheduled rather than timed discretionarily.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 26,283 shares ($2,254,463)
Net Sell
17 txns
Insider
Almstead Neil Gregory
Role
CHIEF TECHNICAL OPS OFFICER
Sold
26,283 shs ($2.25M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) | 1,001 | $0.00 | -- |
| Exercise | Stock Option (Right to Buy) | 19,859 | $0.00 | -- |
| Exercise | Stock Option (Right to Buy) | 100 | $0.00 | -- |
| Exercise | Common Stock | 1,001 | $38.10 | $38K |
| Sale | Common Stock | 582 | $85.24 | $50K |
| Sale | Common Stock | 419 | $86.39 | $36K |
| Exercise | Common Stock | 19,859 | $38.10 | $757K |
| Sale | Common Stock | 8,522 | $85.26 | $727K |
| Sale | Common Stock | 11,337 | $86.51 | $981K |
| Exercise | Common Stock | 100 | $39.42 | $4K |
| Sale | Common Stock | 100 | $87.00 | $9K |
| Exercise | Stock Option (Right to Buy) | 401 | $0.00 | -- |
| Exercise | Stock Option (Right to Buy) | 4,922 | $0.00 | -- |
| Exercise | Common Stock | 401 | $38.10 | $15K |
| Sale | Common Stock | 401 | $85.01 | $34K |
| Exercise | Common Stock | 4,922 | $38.10 | $188K |
| Sale | Common Stock | 4,922 | $85.03 | $419K |
Holdings After Transaction:
Stock Option (Right to Buy) — 47,676 shares (Direct, null);
Common Stock — 61,138 shares (Direct, null)
Footnotes (1)
- This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 11, 2025. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.03 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.14 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.84 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $86.23 to $86.59 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.98 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $86.02 to $86.97 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. Currently exercisable. This option was granted on January 5, 2023, and vests over four years, with 25% of the shares underlying the option vesting on January 5, 2024, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 5, 2024.
Key Figures
Shares sold: 26,283 shares
Shares acquired via option exercise: 26,283 shares
Common shares held after transactions: 60,137 shares
+3 more
6 metrics
Shares sold
26,283 shares
Total common shares sold in open-market transactions on June 24–25, 2026
Shares acquired via option exercise
26,283 shares
Total common shares acquired through option exercises on June 24–25, 2026
Common shares held after transactions
60,137 shares
Direct PTCT common stock ownership following reported trades
Highest reported sale price
$87.00 per share
Open-market sale price for 100 PTCT shares on June 25, 2026
Option exercise price
$39.42 per share
Exercise price for 100 stock options converted to common stock
Option exercise price
$38.10 per share
Exercise price for multiple stock option tranches converted to common stock
Key Terms
Rule 10b5-1 plan, Stock Option (Right to Buy), weighted average price, exercise or conversion of derivative security, +1 more
5 terms
Rule 10b5-1 plan regulatory
"This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person"
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
Stock Option (Right to Buy) financial
"security_title": "Stock Option (Right to Buy)""
weighted average price financial
"This price represents the weighted average price of sale transactions that were executed in multiple trades"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
exercise or conversion of derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
FAQ
What insider transactions did PTCT executive Neil Gregory Almstead report?
Neil Gregory Almstead reported exercising stock options for 26,283 PTCT shares and selling 26,283 common shares in open-market trades. These combined transactions occurred on June 24–25, 2026 and were conducted under a pre-established Rule 10b5-1 trading plan.
What option exercise prices did PTCT’s Neil Gregory Almstead disclose in his Form 4?
The Form 4 shows Almstead exercising stock options to acquire PTCT common shares at exercise prices including $38.10 and $39.42 per share. These derivative exercises converted previously granted options into common stock before subsequent open-market sales.
Were Neil Gregory Almstead’s PTCT stock sales made under a Rule 10b5-1 plan?
Yes. A footnote explains that the reported transactions were effected under a written Rule 10b5-1 trading plan adopted on November 11, 2025. Such pre-arranged plans schedule trades in advance to reduce concerns about discretionary market timing.