Insider · SEC Form 4 filer

Teresa Clarke

Past buys: 3 of 10 beat

Companies

Where they file as an insider

American Tower (AMT) Director Latest filing Oct 20, 2026
Arthur J. Gallagher & (AJG) Director Latest filing May 12, 2026

Track record

Did their buys beat the typical stock?

Open-market buys15
Quarters checked 6 months later10
Beat the typical stock 3 of 10
Quarters too new to check3

3 of 10 checked quarters beat the typical stock. A past record is data, not a forecast.

American Tower (AMT) Bought Oct 20, 2026 · $7.86K · 43 shares Too new Too new. Its 6-month check uses prices as of Jun 30, 2027.
American Tower (AMT) Bought Jul 13, 2026 · $7.78K · 46 shares Too new Too new. Its 6-month check uses prices as of Mar 31, 2027.
American Tower (AMT) Bought Apr 28, 2026 · $7.7K · 44 shares Too new Too new. Its 6-month check uses prices as of Dec 31, 2026.
American Tower (AMT) Bought Feb 2, 2026 · $5.47K · 31 shares Behind typical Mar 31, 2026 $172.58 → Sep 30, 2026 $163.69 · −5.2% (typical stock +1.7%)
American Tower (AMT) Bought Oct 20, 2025 · $5.42K · 29 shares Behind typical Dec 31, 2025 $175.57 → Jun 30, 2026 $163.57 · −6.8% (typical stock +4.7%)
American Tower (AMT) Bought Jul 11, 2025 · $5.38K · 24 shares Behind typical Sep 30, 2025 $192.32 → Mar 31, 2026 $172.58 · −10.3% (typical stock −3.4%)
American Tower (AMT) Bought Apr 28, 2025 · $5.34K · 25 shares Behind typical Jun 30, 2025 $221.02 → Dec 31, 2025 $175.57 · −20.6% (typical stock +2.1%)
American Tower (AMT) Bought Feb 3, 2025 · $3.29K · 18 shares Behind typical Mar 31, 2025 $217.60 → Sep 30, 2025 $192.32 · −11.6% (typical stock +7.3%)
American Tower (AMT) Bought Oct 25, 2024 · $3.27K · 14 shares Beat typical Dec 31, 2024 $183.41 → Jun 30, 2025 $221.02 · +20.5% (typical stock −3.4%)
American Tower (AMT) Bought Jul 12, 2024 · $3.24K · 16 shares Beat typical Sep 30, 2024 $232.56 → Mar 31, 2025 $217.60 · −6.4% (typical stock −7.5%)
American Tower (AMT) Bought Apr 26, 2024 · $3.21K · 19 shares Behind typical Jun 30, 2024 $194.38 → Dec 31, 2024 $183.41 · −5.6% (typical stock +3.9%)
American Tower (AMT) Bought Feb 1, 2024 · $1.54K · 8 shares Beat typical Mar 31, 2024 $197.59 → Sep 30, 2024 $232.56 · +17.7% (typical stock +3.2%)
American Tower (AMT) Bought Oct 27, 2023 · $1.45K · 8 shares Behind typical Dec 31, 2023 $215.88 → Jun 30, 2024 $194.38 · −10.0% (typical stock −1.2%)
American Tower (AMT) Bought Jul 10, 2023 · $1.39K · 7 shares Not counted Not counted. We have no fund price for this stock on both Sep 30, 2023 and Mar 31, 2024.
American Tower (AMT) Bought Apr 28, 2023 · $1.37K · 7 shares Not counted Not counted. We have no fund price for this stock on both Jun 30, 2023 and Dec 31, 2023.

Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.

Past results. This is data, not advice.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast · Your watchlist