Vondran Steven O 4

What Happened

• Steven O. Vondran, President & CEO and a director of American Tower (AMT), exercised 33,482 stock options on 2026-03-04 by paying $94.71 per share (cash outlay ~$3,171,080). The filing shows matching disposition of those shares: he sold a total of 33,482 shares in three open‑market transactions the same day for aggregate proceeds of about $6,309,968.
• The open‑market sale components reported: 15,084 shares at an average ~$187.90 ($2,834,284), 16,625 shares at an average ~$188.82 ($3,139,133), and 1,773 shares at an average ~$189.82 ($336,551). The filing also lists a derivative conversion/disposition line at $0 which reflects the option conversion to shares.

Key Details

• Transaction date (period reported): 2026-03-04; Form filed: 2026-03-06.
• Exercise: 33,482 options exercised at $94.71 → $3,171,080 paid.
• Sales: 33,482 shares sold in three blocks for total proceeds ≈ $6,309,968 (weighted price ranges noted in footnotes: $187.31–190.09).
• Shares owned after transaction: not specified in this Form 4.
• Footnotes: sales were made pursuant to a Rule 10b5‑1 trading plan adopted May 6, 2025 (F1). Option grant subject to the 2007 Equity Incentive Plan and typical 25% cumulative annual vesting beginning March 10, 2017 (F5). Price ranges and weighted averages for the same‑day sales are detailed in F2–F4.
• Filing timeliness: Form filed two days after the report date; no late‑filing designation indicated.

Context

• This is an exercise of previously granted options followed by immediate open‑market sales — effectively a cashless exercise and sale of the acquired shares. Such transactions often reflect routine option monetization rather than a new purchase signal; the presence of a pre‑arranged 10b5‑1 plan indicates the sales were pre-scheduled.