Samme L. Thompson is Director at AMERICAN TOWER CORP /MA/ (AMT). They have made 18 open-market trades across 2 companies since 2007, most recently 2024-03-11.
CIK 0001197598
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 18 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMT | SELL · 10b5-1 | 2024-03-01 | 2024-03-05 | $198.90 | $1.0M | -4.4% | -7.8% | -4.6% |
| AMT | SELL · 10b5-1 | 2024-02-26 | 2024-02-28 | $190.22 | $961K | +5.9% | -1.1% | -5.2% |
| AMT | SELL | 2023-02-06 | 2023-02-08 | $218.59 | $760K | -6.7% | -12.8% | -11.8% |
| AMT | SELL | 2023-01-03 | 2023-01-05 | $214.00 | $321K | +5.5% | +3.4% | -4.1% |
| AMT | SELL | 2022-02-04 | 2022-02-08 | $248.16 | $789K | -7.9% | -6.2% | -6.9% |
| AMT | SELL | 2022-01-03 | 2022-01-05 | $292.37 | $585K | -5.2% | -6.6% | -0.4% |
| AMT | SELL | 2021-02-05 | 2021-02-09 | $232.64 | $769K | -3.2% | -8.0% | +7.0% |
| AMT | SELL | 2021-01-04 | 2021-01-06 | $226.07 | $452K | +0.7% | +8.2% | +13.2% |
| AMT | SELL | 2020-02-05 | 2020-02-07 | $237.50 | $554K | +3.3% | -3.3% | -1.8% |
| AMT | SELL | 2020-01-03 | 2020-01-07 | $227.56 | $683K | +4.4% | +6.4% | +5.2% |
| AMT | SELL | 2019-03-01 | 2019-03-05 | $175.68 | $480K | +4.4% | +6.6% | +15.6% |
| AMT | SELL | 2019-01-02 | 2019-01-04 | $157.11 | $314K | +3.3% | +7.9% | +21.8% |
| AMT | SELL | 2018-03-20 | 2018-03-22 | $146.36 | $512K | +0.0% | -3.3% | -1.7% |
| AMT | SELL | 2018-01-02 | 2018-01-04 | $143.16 | $716K | -2.6% | +1.3% | +2.0% |
| AMT | SELL | 2017-03-02 | 2017-03-06 | $113.76 | $1.1M | +0.7% | +5.5% | +15.1% |
| AMT | SELL | 2016-10-24 | 2016-10-26 | $116.13 | $511K | -1.3% | -8.1% | -10.4% |
| AMT | SELL | 2016-09-06 | 2016-09-08 | $116.00 | $166K | -5.8% | -5.1% | -11.4% |
| AMT | SELL | 2016-02-29 | 2016-03-02 | $90.43 | $1.8M | +3.4% | +10.2% | +11.6% |
| USMO | SELL | 2010-05-24 | 2010-05-27 | $13.81 | $21K | N/A | N/A | N/A |
| USMO | SELL | 2007-11-13 | 2007-11-13 | $14.83 | $44K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.