Form 4: Director Ronald Foster Exercises AEIS Stock Units

Advanced Energy Industries director Ronald Foster acquired 2,313 shares of common stock following the vesting of restricted stock units.

Summary

• Director Ronald C. Foster acquired 2,313 shares of Advanced Energy Industries (AEIS) common stock on May 2, 2026.
• The acquisition resulted from the vesting of restricted stock units (RSUs) granted on May 2, 2025.
• Following the transaction, the director holds 6,663 shares directly.
• The director maintains indirect beneficial ownership of 18,425 shares held in a spousal trust and 18,425 shares held in his own trust.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral, routine administrative filing regarding director compensation and equity ownership.

Positives

• Director maintains significant skin in the game with a total direct and indirect holding of 43,513 shares.

Negatives

• None identified.

Risks

• None identified.

Future Outlook

Not applicable as this is a routine disclosure of insider equity transactions.

Industry Context

StockSavvy.ai notes that routine RSU vesting for board members is a standard component of executive and director compensation packages in the semiconductor and power conversion equipment industry.

Comparison to Industry Standards

• The transaction aligns with standard corporate governance practices regarding director equity compensation.
• The holding levels are consistent with typical ownership requirements for directors at mid-cap technology firms.

Related Party Transactions

• The reporting person serves as trustee for the Kathryn A. Foster 2020 Spousal Trust and the Ronald C. Foster 2021 Trust.

Stakeholder Impact

• Minimal impact on shareholders as this represents the fulfillment of previously disclosed compensation agreements.

Next Steps

• None identified.

Key Dates

Keywords

AEIS, Advanced Energy Industries, Form 4, Insider Trading, Director Ownership, Restricted Stock Units