Tectonic Therapeutic (TECX) CSO exercises options, sells 43 shares under 10b5-1 plan
Rhea-AI Filing Summary
Tectonic Therapeutic, Inc. Chief Scientific Officer Peter McNamara exercised options for 43 shares of common stock at an exercise price of $14.71 per share and immediately sold 43 shares of common stock at $35.00 per share on August 12, 2026. Following the option exercise, he held 7,830 employee stock options directly. The exercise and subsequent sale were carried out under a Rule 10b5-1 trading plan adopted on November 14, 2025.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Exercise and Sale: 43 shares ($872.47 approx. pre-tax spread)
Exercise and Sale
3 txns
Insider
McNamara Peter
Role
Chief Scientific Officer
Sold
43 shs ($2K)
Approx. gross sale proceeds
$2K
Approx. exercise cost
$632.53
Approx. pre-tax spread
$872.47
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Stock Option (Right to Buy) F1, F2 | 43 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 43 | $14.71 | $632.53 |
| Sale | Common Stock F1 | 43 | $35.00 | $2K |
Holdings After Transaction:
Employee Stock Option (Right to Buy) — 7,830 shares (Direct);
Common Stock — 55,285 shares (Direct)
Footnotes (2)
- F1. This exercise and subsequent sale was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 14, 2025.
- F2. The shares subject to the option vest in 48 equal monthly installments beginning on October 25, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
Key Figures
Options exercised: 43 shares
Option exercise price: $14.71 per share
Shares sold: 43 shares
+4 more
7 metrics
Options exercised
43 shares
Employee stock options exercised on August 12, 2026
Option exercise price
$14.71 per share
Exercise price of Employee Stock Option (Right to Buy)
Shares sold
43 shares
Common stock sold on August 12, 2026
Sale price
$35.00 per share
Price for sale of 43 common shares
Options remaining
7,830 options
Total employee stock options following the transaction
Option expiration
September 24, 2035
Expiration date of the Employee Stock Option
10b5-1 plan adoption date
November 14, 2025
Date Rule 10b5-1 trading plan was adopted
Key Terms
Rule 10b5-1 trading plan, Employee Stock Option (Right to Buy), derivative security, vesting, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"This exercise and subsequent sale was made pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Employee Stock Option (Right to Buy) financial
"security_title: Employee Stock Option (Right to Buy)"
derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
vesting financial
"The shares subject to the option vest in 48 equal monthly installments"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
underlying security financial
"underlying_security_title: Common Stock as underlying security"
FAQ
What insider transactions did TECX Chief Scientific Officer Peter McNamara report?
Peter McNamara exercised 43 options at $14.71 per share and sold 43 common shares at $35.00 per share on August 12, 2026, in a coordinated exercise-and-sell transaction.
How many Tectonic Therapeutic (TECX) options does Peter McNamara retain after this Form 4?
After the reported transactions, Peter McNamara directly held 7,830 employee stock options. These options relate to common stock and remain outstanding following the exercise of 43 options on August 12, 2026.
Was the TECX insider sale by Peter McNamara under a Rule 10b5-1 plan?
Yes. The option exercise and subsequent sale were made under a Rule 10b5-1 trading plan that Peter McNamara adopted on November 14, 2025, indicating the trades were pre-arranged.
What type of securities did Peter McNamara transact in for Tectonic Therapeutic (TECX)?
He exercised Employee Stock Options for 43 underlying common shares and then sold 43 shares of common stock. The options are a derivative security with an exercise price of $14.71 and expiry on September 24, 2035.
AI-generated analysis. How Rhea-AI works. Not financial advice.
