ON Semiconductor Officer Files Form 144 for $1.25M Planned Sale

Executive Summary

On October 1, 2026, Sudhir Gopalswamy, an Officer at ON Semiconductor Corp ($ON), filed a Form 144 notice of proposed sale covering 15,578 shares of common stock with an aggregate market value of approximately $1.25 million. The proposed transaction is scheduled around October 1, 2026, via Rockefeller Capital Management.

Key Transaction Details

• Shares Proposed for Sale: 15,578 common shares
• Estimated Aggregate Market Value: $1,246,240.00 (implied price of ~$80.00 per share)
• Shares Outstanding: 389,311,721 shares (proposed sale represents ~0.004% of total shares outstanding)
• Ownership Structure: Indirect holding via the Sudhir Gopalswamy Living Trust
• 10b5-1 Plan Adoption: May 14, 2026
• Acquisition History: Acquired via equity compensation/stock awards from the issuer between April 2024 and February 2025

Market & Trading Significance

The proposed sale carries Low market significance. The volume sold constitutes a negligible fraction of the company's public float. Additionally, the execution takes place pursuant to a pre-arranged Rule 10b5-1 trading plan adopted over four months prior, reflecting routine portfolio diversification rather than opportunistic trading.