Steven O. Vondran is President & VP at AMERICAN TOWER CORP /MA/ (AMT). They have made 14 open-market trades across 1 company since 2020, most recently 2026-03-11.
CIK 0001749304
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 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMT | 108,902 | $20.2M |
| AEE | 3,597 | $382K |
| Total | $20.6M |
Shares reported on the most recent Form 4, priced at the 2026-03-12 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMT | SELL | 2026-03-04 | 2026-03-06 | $188.46 | $6.3M | -4.0% | -6.4% | +3.2% |
| AMT | SELL · 10b5-1 | 2024-08-02 | 2024-08-06 | $230.00 | $5.0M | -2.9% | +3.2% | -6.3% |
| AMT | SELL · 10b5-1 | 2024-03-04 | 2024-03-06 | $200.27 | $1.2M | -5.6% | -8.4% | -3.5% |
| AMT | SELL | 2021-07-12 | 2021-07-14 | $278.99 | $4.9M | +0.9% | +0.3% | -6.2% |
| AMT | SELL | 2020-12-01 | 2020-12-03 | $232.00 | $348K | -4.2% | -3.2% | -10.5% |
| AMT | SELL | 2020-11-02 | 2020-11-04 | $232.58 | $349K | -0.5% | -4.8% | -1.7% |
| AMT | SELL | 2020-10-01 | 2020-10-05 | $242.19 | $363K | -1.8% | -2.8% | -10.0% |
| AMT | SELL | 2020-09-01 | 2020-09-03 | $248.44 | $373K | +4.6% | -3.3% | -9.1% |
| AMT | SELL | 2020-08-03 | 2020-08-05 | $259.00 | $346K | -1.5% | -1.9% | -8.0% |
| AMT | SELL | 2020-07-01 | 2020-07-02 | $259.50 | $720K | -4.2% | -4.5% | -10.0% |
| AMT | SELL | 2020-06-01 | 2020-06-03 | $258.03 | $706K | -0.6% | +0.7% | -6.1% |
| AMT | SELL | 2020-05-01 | 2020-05-05 | $233.24 | $538K | -4.7% | +7.8% | +6.5% |
| AMT | SELL | 2020-04-01 | 2020-04-03 | $205.81 | $506K | +10.4% | +3.8% | +15.9% |
| AMT | SELL | 2020-03-02 | 2020-03-04 | $229.03 | $585K | -18.4% | -10.4% | +6.1% |
| AMT | SELL | 2020-02-03 | 2020-02-05 | $232.98 | $590K | +6.6% | +3.9% | +1.3% |
| AMT | SELL | 2020-01-02 | 2020-01-06 | $229.68 | $579K | +2.2% | +4.1% | +3.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.