Astera Labs Director Stefan Dyckerhoff Disposes of $4.7M in Stock Under Rule 10b5-1 Plan

Executive Summary

On October 9, 2026, Astera Labs, Inc. ($ALAB) director Stefan A. Dyckerhoff reported transactions involving both equity grants and open market sales of common stock. On October 1, 2026, Dyckerhoff was granted 68 restricted stock units (RSUs) valued at $311.57 per share in lieu of quarterly cash retainer fees. Subsequently, on October 7, 2026, Dyckerhoff executed sales totaling 12,499 shares at a price of $376.06 per share, generating aggregate proceeds of approximately $4.70 million.

Transaction Breakdown

• October 1, 2026 (Grant - Code A): Acquired 68 RSUs directly at $311.57 per share in lieu of cash retainer fees under the 2024 Stock Option and Incentive Plan.
• October 7, 2026 (Sales - Code S):
  • Direct Sale: 3,505 shares at $376.06 ($1,318,090.30)
  • Trust Sale (Indirect): 8,333 shares at $376.06 ($3,133,707.98)
  • Limited Partnership Sale (Indirect): 661 shares at $376.06 ($248,575.66)
  • Aggregate Sales: 12,499 shares for $4,700,373.94.

Ownership Structure & Plan Details

All October 7 sales were executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on December 1, 2025. Following these transactions, Dyckerhoff retains substantial holdings across multiple vehicles:

• Direct: 47,019 shares
• Trust: 286,400 shares
• Limited Partnership (TF): 2,648 shares
• Irrevocable Trusts (DIFT entities): 18,827 shares across 5 trusts
• Total Remaining Holdings: ~354,894 shares

Market & Trading Significance

The trading significance is assessed as Medium. Although the gross transaction value is substantial at $4.70M, the trades were executed systematically under a pre-cleared Rule 10b5-1 plan established roughly 10 months prior. Dyckerhoff retains over 350,000 shares across direct and indirect entities, maintaining significant exposure to Astera Labs' long-term equity performance.