Dowling Ruth T 4

What Happened
Ruth T. Dowling, EVP, Chief Administrative Officer, General Counsel & Secretary of American Tower (AMT), had 6,878 restricted stock units (RSUs) vest on 2026-03-10 (recorded as an acquisition at $0.00 per share). To cover withholding taxes on the vesting, 6,629 shares were delivered to the issuer on 2026-03-10 at $186.12 per share (value $1,233,789) and an additional 863 shares were delivered on 2026-03-11 at $182.85 per share (value $157,800). The combined value of shares surrendered for taxes is approximately $1,391,589. These transactions reflect RSU vesting with share withholding for taxes (not an open-market sale).

Key Details

• Transaction dates/prices:
  • 2026-03-10: 6,878 RSUs vested (acquisition reported at $0.00 per RSU) — Footnote F1.
  • 2026-03-10: 6,629 shares delivered for tax withholding at $186.12 (disposed) — $1,233,789 — Footnote F2.
  • 2026-03-11: 863 shares delivered for tax withholding at $182.85 (disposed) — $157,800 — Footnote F3.
• Total value of shares surrendered for taxes: ~ $1.39 million.
• Shares owned after the transactions: not specified in the provided filing summary.
• Notable footnotes:
  • F1: RSUs granted under the 2007 Equity Incentive Plan; they vest 1/3 annually over three years and represent rights to one share each.
  • F2/F3: Shares were delivered to the issuer to satisfy tax withholding upon vesting.
• Filing timing: Form filed 2026-03-12 for transactions on 2026-03-10/11; filing appears timely (within the typical 2-business-day Form 4 window).

Context
These were vesting RSUs with shares surrendered to the company to pay withholding taxes (a common, routine administrative action). This is not an open-market sale signaling a change in investment intent; rather, it’s a cashless share withholding used to satisfy tax obligations.