As of November 6, 2026, American Tower Corp is a publicly traded company (NYSE: AMT); its largest reported holder is Vanguard, with 7.56% on Schedule 13G of April 29, 2026, then Vanguard (5.94%). The largest insider holding is Steven O. Vondran, the chief executive and president, with 108,902 shares (0.02% of shares outstanding), per Form 4 of March 12, 2026 (Schedule 13G, April 29, 2026).
Is this your company?
About to sign with, pay or invest in American Tower Corp? See the free Snapshot first.
Free to see. No signup.
Is American Tower Corp a real, registered company?
- American Tower Corp files with the SEC under CIK 1053507 (its SEC filings).
- Its shares are listed under the ticker AMT on NYSE (SEC company record).
- Incorporated in Delaware; business address in Boston, Massachusetts, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under American Tower Corp in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Kristen M. Ludgate, Director (Form 8-K filed 2026-09-18). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Vanguard (filed 2026-04-29).
Who are American Tower Corp's owners and officers?
American Tower Corp: incorporated in Delaware; business address in Boston, Massachusetts; industry Real Estate Investment Trusts (Form D, 2026-09-18).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 7.56% |
| Schedule 13G, 2026-04-28 | Vanguard Portfolio Management | 5.94% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
Questions about who owns American Tower Corp
Who owns American Tower Corp?
On this page, 2 holders' latest ownership filings report 5% or more of American Tower Corp: Vanguard Capital Management (7.56%, Schedule 13G, filed 2026-04-29) and Vanguard Portfolio Management (5.94%, Schedule 13G, filed 2026-04-28).
Who are the largest shareholders of American Tower Corp?
By the share each holder's latest filing reports, the largest holders of American Tower Corp on this page are Vanguard Capital Management (7.56%) and Vanguard Portfolio Management (5.94%).
When did Vanguard Capital Management buy into American Tower Corp?
The filings give report dates, not purchase dates. The earliest filing from Vanguard Capital Management on this page is the Schedule 13G, filed 2026-04-29, reporting 7.56%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Want the whole picture on American Tower Corp?
Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
A Full Report on American Tower Corp: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on American Tower Corp covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
10 cited sources found
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-09-18 | Kristen M. Ludgate | Director | appointed |
Which insiders own American Tower Corp shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 108,902 shares (0.02% of shares outstanding) (Form 4, 2026-03-12).
- , the chief financial officer and executive vice president: 92,542 shares (0.02% of shares outstanding) (Form 4, 2026-03-12).
- Joann A. Reed: 62,940 shares (0.01% of shares outstanding) (Form 4, 2025-05-16).
- Olivier Puech: 38,144 shares (0.01% of shares outstanding) (Form 4, 2026-01-06).
- , the chief operating officer and executive vice president: 34,542 shares (0.01% of shares outstanding) (Form 4, 2026-03-12).
Shares outstanding: 463,763,555 as of 2026-10-20, from the company's latest SEC cover page.
How much has American Tower Corp raised?
No fundraising or offering filing from American Tower Corp is on file with us.
Keep reading
More on American Tower Corp and the records around it.
American Tower Corp elsewhere on the record
- Leadership changes Sep 2026
Companies that share a holder
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
Related pages
Filings, cases and notices link to their records. A not-found line names the records searched; it is not proof of absence.
Not for employment, credit, insurance or tenancy decisions.
Cite this page
https://mentionfox.com/who-owns/american-tower