AMERICAN TOWER CORP /MA/ (AMT) — Insider Trading

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This analysis covers the filing from 2026-03-12. New 10-K, 10-Q and 8-K filings are analyzed the moment they are released — exclusively in the app.

Earlier Insider Trading filings

Filed: 2026-03-12
  • The CEO, Steven O. Vondran, acquired a substantial number of 20,955 restricted stock units (RSUs) under the company's equity incentive plan, indicating confidence in the company's future performance.
  • Vondran also sold 17,427 shares to cover tax withholding obligations related to the vesting of previous RSU grants, suggesting some liquidity needs but not a significant reduction in his overall equity position.
  • The timing of these transactions, with the RSU grant and share sales occurring within a two-day period, suggests a routine part of the CEO's compensation and equity management strategy.
Filed: 2026-03-12
  • Kelly C. Chambliss, a director of American Tower Corp (AMT), acquired 1,209 shares of common stock on March 10, 2026, indicating increased confidence in the company.
  • The acquisition was through the vesting of restricted stock units (RSUs) granted under the 2007 Equity Incentive Plan, suggesting Chambliss' compensation is aligned with shareholder interests.
  • With this transaction, Chambliss now owns a total of 4,426 shares of AMT, demonstrating their commitment to the company's long-term success.
Filed: 2026-03-12
  • The reporting person, Craig Macnab, acquired 1,209 shares of American Tower Corp (AMT) common stock, increasing their direct ownership to 15,315 shares.
  • The shares were acquired through a grant of restricted stock units (RSUs) that vest on March 10, 2027, indicating a long-term incentive for the director.
  • The transaction suggests the director's continued confidence in American Tower Corp's performance and alignment with shareholder interests.
Filed: 2026-03-12
  • The reporting person, Rajesh Kalathur, acquired 1,209 restricted stock units (RSUs) and purchased 2,671 shares of American Tower Corp (AMT) common stock, increasing his direct ownership to 4,936 shares.
  • Kalathur also holds an indirect beneficial ownership of 171 shares through a trust controlled by his spouse.
  • The transactions indicate Kalathur, who serves as a director of AMT, is increasing his stake in the company, which could signal his confidence in the company's future prospects.
Filed: 2026-03-12
  • Robert D. Hormats, a director of American Tower Corporation (AMT), acquired 1,209 shares of the company's common stock on March 10, 2026, indicating a positive outlook and alignment with the company's long-term success.
  • The shares were acquired as restricted stock units (RSUs) that vest on March 10, 2027, suggesting a commitment to the company's long-term growth and development.
  • Insider buying, particularly by a director, can be a positive signal for investors, as it demonstrates confidence in the company's future prospects.
Filed: 2026-03-12
  • The reporting person, Teresa Hillary Clarke, has acquired 1,209 shares of American Tower Corporation (AMT) common stock through the vesting of restricted stock units (RSUs) granted under the company's 2007 Equity Incentive Plan.
  • The RSUs vest on March 10, 2027, indicating a long-term investment in the company by the director.
  • With the reported transaction, the director now holds 5,307 shares of AMT common stock directly, signaling continued confidence in the company's prospects.
Filed: 2026-03-12
  • The reporting person, Pamela D.A. Reeve, acquired 1,209 shares of American Tower Corporation common stock, increasing her direct beneficial ownership to 21,899 shares.
  • The restricted stock units (RSUs) acquired by Reeve vest on March 10, 2027, aligning her interests with long-term shareholders.
  • As a director of American Tower Corporation, Reeve's share acquisition may signal her confidence in the company's future performance.
Filed: 2026-03-12
  • The filing indicates that Eugene F. Reilly, a director of American Tower Corporation (AMT), has acquired 1,209 shares of the company's common stock on March 10, 2026 at no cost through a grant of restricted stock units (RSUs).
  • The RSUs are part of the company's 2007 Equity Incentive Plan and will vest on March 10, 2027, suggesting a long-term incentive for the director to remain engaged with the company.
  • The acquisition of these shares increases Reilly's direct beneficial ownership in AMT to 6,898 shares, potentially signaling his confidence in the company's future prospects.
Filed: 2026-03-12
  • The reporting person, Bruce L. Tanner, has acquired 1,209 shares of American Tower Corp common stock, increasing his direct ownership to 6,940 shares.
  • The shares were acquired as restricted stock units (RSUs) that vest on March 10, 2027, aligning the reporting person's interests with long-term shareholder value.
  • Insider buying is generally viewed as a positive signal, indicating the reporting person's confidence in the company's future prospects.
Filed: 2026-03-12
  • Grace Lieblein, a director of American Tower Corp, has acquired 1,209 shares of the company's common stock at no cost through a restricted stock unit grant.
  • The restricted stock units vest on March 10, 2027, indicating Lieblein's long-term commitment to the company.
  • Insider buying, especially by directors, can be a positive signal for investors as it suggests confidence in the company's future performance.
Filed: 2026-03-12
  • Kenneth R. Frank, a director of American Tower Corporation, has acquired 1,209 shares of the company's common stock through a restricted stock unit (RSU) grant vesting on March 10, 2027.
  • This insider transaction suggests that a director at the company has confidence in the long-term prospects of American Tower and is aligning their interests with shareholders.
  • The vesting schedule of the RSUs indicates a longer-term investment horizon, which could signal the director's belief in the company's ability to generate value over the coming years.
Filed: 2026-03-06
  • The reporting person, Steven O. Vondran, is the President and CEO of American Tower Corporation and has conducted a significant transaction involving the acquisition and sale of the company's common stock.
  • Vondran exercised 33,482 stock options and then sold a total of 33,482 shares of common stock in multiple transactions, likely pursuant to a pre-arranged trading plan.
  • The reported transactions represent a reduction in Vondran's direct beneficial ownership of American Tower's common stock from 138,856 shares to 105,374 shares.
Filed: 2026-03-06
  • The reporting person, Ruth T. Dowling, an EVP, Chief Admin Ofr, GC & Sec at American Tower Corp, sold 682 shares of the company's common stock on March 4, 2026 pursuant to a pre-arranged 10b5-1 trading plan.
  • The transaction was executed at an average price of $188.51 per share, reducing Dowling's direct beneficial ownership to 31,047 shares.
  • Insider selling can sometimes signal reduced confidence in the company's prospects, but the pre-planned nature of this transaction mitigates concerns about its significance.

Other reports for AMERICAN TOWER CORP /MA/

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AI-generated analysis is for informational purposes only. Always read original SEC filings and consult with qualified professionals before making investment decisions.