Form 4: Shattuck Labs CTO Trades Shares Under 10b5-1 Plan

Shattuck Labs Chief Technical Officer Abhinav Shukla executed a series of transactions involving company stock and stock options, primarily under a pre-established Rule 10b5-1 trading plan.

Summary

• Abhinav Shukla, Chief Technical Officer of Shattuck Labs, Inc., reported transactions involving common stock and stock options.
• On July 2, 2026, Shukla acquired 410 shares of common stock at $3.57 per share and sold 410 shares at a weighted average price of $7.01, with prices ranging from $7.00 to $7.03.
• These sales were part of a Rule 10b5-1 trading plan adopted on February 2, 2026, intended to cover exercise price and tax withholding for options.
• On July 6, 2026, Shukla acquired an additional 12,153 shares of common stock at $3.57 per share.
• Following these transactions, Shukla beneficially owns 98,533 shares of common stock.
• The filing also details stock options, with a total of 52,200 shares available, vesting through January 25, 2027.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this filing as neutral, as it represents routine insider transactions executed under a pre-defined plan rather than indicating significant new company performance or strategic shifts.

Positives

• The transactions were conducted under a Rule 10b5-1 plan, indicating pre-planned and potentially less market-sensitive trading activity.
• The acquisition of shares at a lower price ($3.57) and subsequent sale at a higher price ($7.01 weighted average) suggests a profitable execution within the plan.
• The CTO continues to hold a significant number of shares (98,533) after these transactions.

Negatives

• The sale of shares, even under a 10b5-1 plan, represents a reduction in the CTO's direct holdings.
• The weighted average sale price of $7.01 is noted, with the understanding that individual sales occurred at prices between $7.00 and $7.03.

Risks

• The Rule 10b5-1 plan is designed to fund option exercises and tax withholdings, implying that future sales may occur to meet these financial obligations.
• The vesting schedule for stock options indicates that a portion of the CTO's compensation is tied to continued service and future performance.

Future Outlook

The filing does not contain explicit forward-looking statements or guidance. However, the existence and execution of the Rule 10b5-1 plan suggest potential future transactions related to stock option exercises and tax obligations.

Management Comments

• The Rule 10b5-1 plan is intended to execute sales of shares received upon option exercise only as needed to fund the exercise price and estimated tax withholding associated with option exercises under the plan.
• Under the procedures of the administering broker, acquired shares are first sold to fund the aggregate exercise price and estimated tax withholding for all possible option exercises in a particular order under the plan, and only once fully funded will acquired shares be held by the Reporting Person.
• This transaction represents the final sale of shares needed to fully fund the exercise price and estimated tax withholding for the option exercises under this order of the plan, and the remaining shares acquired upon exercise under this order will be held by the Reporting Person.

Industry Context

StockSavvy.ai notes that Form 4 filings are standard disclosures for insider transactions. The use of a Rule 10b5-1 plan by Shattuck Labs' CTO is a common strategy for executives to manage stock sales in a manner that can provide an affirmative defense against allegations of insider trading, particularly relevant in the biotechnology sector where stock price can be volatile.

Stakeholder Impact

• Shareholders: The sale of shares by a key executive may be perceived by some shareholders, but the execution under a 10b5-1 plan mitigates concerns about insider trading.
• Employees: The CTO's continued stock ownership and option grants suggest alignment with company performance.
• Management: The transactions reflect standard compensation and equity management practices for senior executives.

Next Steps

• Continued monitoring of Abhinav Shukla's beneficial ownership and any future transactions.
• Observation of Shattuck Labs' stock performance and any future corporate developments.

Key Dates

Keywords

Form 4, SEC Filing, Shattuck Labs, STTK, Abhinav Shukla, Chief Technical Officer, Stock Options, Beneficial Ownership, Rule 10b5-1, Insider Trading, Stock Transactions