Form 4: SITIME Executive Sells Shares for Tax Obligations

Fariborz Assaderaghi, EVP of Engineering & Technology at SITIME Corp, disposed of 4,886 shares of common stock to cover tax liabilities related to equity vesting, effective August 20, 2025.

Summary

• Fariborz Assaderaghi, Executive Vice President of Engineering & Technology and a Director at SITIME Corp (SITM), reported a transaction involving the disposition of common stock.
• On August 20, 2025, Mr. Assaderaghi disposed of 4,886 shares of SITIME Common Stock at a price of $221.6 per share.
• This transaction was coded 'F', indicating the payment of tax liability by withholding securities upon the vesting of equity awards.
• Following this transaction, Mr. Assaderaghi beneficially owns 96,433 shares of common stock directly.
• The reported beneficial ownership includes an aggregate of 87,670 unvested shares, comprising 40,650 time-based restricted stock units and 47,020 performance-based restricted stock units, which vest based on specific conditions including absolute and relative price performance of SITIME's common stock.

Sentiment

Score: 6

Explanation: The filing reports a routine, non-discretionary sale of shares by an executive to cover tax liabilities upon equity vesting. This is a neutral event, as it does not reflect a change in the executive's confidence in the company, and a significant amount of unvested equity remains.

Positives

• The disposition of shares was for the purpose of covering tax liabilities, which is a non-discretionary event and not a market-driven sale by the executive.
• The transaction was made pursuant to a Rule 10b5-1(c) plan, indicating pre-planned and compliant insider trading practices.
• Mr. Assaderaghi retains a significant beneficial ownership of 96,433 shares, including a substantial portion of unvested equity (87,670 shares), demonstrating continued alignment with shareholder interests.

Negatives

• The transaction resulted in a reduction of 4,886 shares from the executive's direct beneficial ownership.

Risks

• No specific risks are detailed within this Form 4 filing, as it primarily reports a change in beneficial ownership.

Future Outlook

The executive's beneficial ownership includes 87,670 unvested restricted stock units and performance-based restricted stock units, indicating future vesting events tied to time and company stock performance.

Management Comments

• The transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Industry Context

This type of transaction, where an executive disposes of shares to cover tax liabilities upon the vesting of equity awards, is a common and routine occurrence across all industries for publicly traded companies that compensate executives with stock-based incentives. It is a standard mechanism for managing the tax implications of equity compensation.

Comparison to Industry Standards

• The disposition of shares to cover tax obligations upon equity vesting is a standard practice for executives across the technology and semiconductor industries, including companies like NVIDIA, Intel, and Qualcomm, which frequently grant restricted stock units (RSUs) and performance stock units (PSUs) as part of their compensation packages.
• The use of a Rule 10b5-1(c) plan for such transactions aligns with best practices in corporate governance, ensuring that insider transactions are pre-planned and not based on material non-public information, a standard adopted by many S&P 500 companies.

Corporate Governance

Stakeholder Impact

• Shareholders: Minimal impact, as this is a routine, non-discretionary tax-related sale and the executive retains substantial beneficial ownership, including significant unvested equity.
• Employees: No direct impact mentioned.

Next Steps

• Continued vesting of the remaining 87,670 unvested restricted stock units and performance-based restricted stock units held by Mr. Assaderaghi, subject to their respective time and performance conditions.

Key Dates

Recommendation

This Form 4 reports a routine, non-discretionary sale of shares by an executive to cover tax liabilities upon equity vesting. It does not reflect a change in the executive's confidence in the company or its future prospects, as a significant number of shares and unvested equity remain. Therefore, it provides no new fundamental information to alter an investment thesis, warranting a 'hold' recommendation based solely on this filing.

Keywords

SITIME Corp, SITM, Form 4, insider transaction, executive compensation, equity vesting, stock sale, Fariborz Assaderaghi, restricted stock units, performance stock units