Form 4: SiTime CEO Vashist Disposes Shares for Tax Obligations

SiTime CEO Rajesh Vashist reported a disposition of 5,555 common shares, valued at $221.6 per share, primarily for tax withholding purposes under a 10b5-1 plan.

Summary

• Rajesh Vashist, Chief Executive Officer and Director of SiTime Corp (SITM), reported a transaction on August 20, 2025.
• The transaction involved the disposition of 5,555 shares of SiTime Common Stock at a price of $221.6 per share.
• This disposition was made pursuant to a Rule 10b5-1 plan, indicating a pre-arranged transaction, and is typically associated with tax withholding upon the vesting of equity awards (transaction code 'F').
• Following this transaction, Mr. Vashist directly beneficially owns 465,208 shares.
• The direct beneficial ownership includes 280,158 unvested restricted stock units (RSUs) and performance-based restricted stock units (PSUs), with RSUs vesting over time and PSUs vesting based on absolute and relative price performance.
• Indirect beneficial ownership includes 1,809 shares through Aldebran Rajesh Family Dynasty Trust, 1,809 shares through Aldebran Rohini Family Dynasty Trust, and 24,781 shares through Aldebran Constellation LLC, for which Mr. Vashist has voting and investment power.

Sentiment

Score: 5

Explanation: The filing reports a routine insider transaction (disposition for tax withholding) under a 10b5-1 plan and does not indicate any significant positive or negative operational or strategic developments for the company.

Positives

• Significant remaining direct beneficial ownership of 465,208 shares, including 280,158 unvested restricted stock units and performance-based restricted stock units, indicates continued alignment of management's interests with shareholders.
• The transaction was executed under a Rule 10b5-1 plan, demonstrating pre-planned and transparent insider trading practices.

Negatives

• Disposition of 5,555 shares, even if for tax purposes, results in a minor reduction in the direct shareholding of the CEO.

Risks

• NA

Future Outlook

NA

Industry Context

NA

Related Party Transactions

• Indirect beneficial ownership is held through Aldebran Rajesh Family Dynasty Trust, Aldebran Rohini Family Dynasty Trust, and Aldebran Constellation LLC, where the Reporting Person is one of the managers and has voting and investment power over the shares.

Stakeholder Impact

• Shareholders: Minimal impact as the transaction is a routine tax-related disposition, not a discretionary sale, and overall beneficial ownership remains substantial, aligning interests.
• Employees: No direct impact.

Key Dates

Recommendation

This Form 4 reports a routine disposition of shares by the CEO for tax withholding purposes, executed under a Rule 10b5-1 plan. This is a common occurrence upon the vesting of equity awards and does not reflect a discretionary sale or a change in the company's fundamentals. Therefore, it does not warrant a change in investment recommendation based solely on this filing.

Keywords

SiTime, SITM, Form 4, insider transaction, Rajesh Vashist, CEO, stock disposition, beneficial ownership, restricted stock units, performance stock units, 10b5-1 plan