American Tower EVP & General Counsel Sells $291K Under Rule 10b5-1 Plan

Executive Summary

On October 30, 2026, American Tower Corp ($AMT) filed a Form 4 disclosing open-market sales of common stock by Ruth T. Dowling, Executive Vice President, Chief Administrative Officer, General Counsel, and Secretary. Over two trading days (October 28–29, 2026), Ms. Dowling disposed of 1,578 shares for total proceeds of approximately $290,823.12.

Transaction Breakdown

• October 28, 2026: Disposed of 626 shares at $182.00 per share ($113,932.00).
• October 29, 2026: Disposed of 952 shares at $185.81 per share ($176,891.12).
• Total Disposed: 1,578 shares (~$184.30 weighted average price).
• Post-Transaction Holdings: 26,133 shares directly held.

Key Considerations

• Rule 10b5-1 Plan: The transactions were executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on October 29, 2025, exactly one year prior to execution. This eliminates concerns regarding opportunistic trading based on material non-public information.
• Significance: Low. The shares sold represent approximately 5.7% of the insider's direct position prior to the sales, leaving her with a substantial remaining stake of 26,133 shares.