Mary S. Chan is Director at SBA COMMUNICATIONS CORP (SBAC). They have made 6 open-market trades across 2 companies since 2018, most recently 2026-05-01.
CIK 0001641154
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 since 2018, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SBAC | SELL | 2025-02-28 | 2025-03-04 | $218.07 | $615K | +1.2% | +7.1% | +7.1% |
| NKLA | SELL | 2024-09-04 | 2024-09-06 | $6.18 | $4K | -2.8% | -8.7% | -68.9% |
| NKLA | SELL | 2024-03-05 | 2024-03-07 | $0.68 | $17K | -11.7% | +44.1% | -23.7% |
| SBAC | SELL | 2024-03-05 | 2024-03-08 | $217.99 | $862K | -2.5% | -3.7% | -11.7% |
| SBAC | SELL | 2020-05-28 | 2020-06-01 | $311.20 | $4.6M | -7.7% | -4.1% | -2.6% |
| SBAC | SELL | 2020-01-13 | 2020-01-15 | $250.00 | $1.1M | +0.9% | +18.1% | +21.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.