Mark R. Ciarfella is VP at SBA COMMUNICATIONS CORP (SBAC). They have made 33 open-market trades across 1 company since 2011, most recently 2026-03-06.
CIK 0001504654
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 33 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SBAC | 38,059 | $7.1M |
Shares reported on the most recent Form 4, priced at the 2026-03-09 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SBAC | SELL | 2024-12-09 | 2024-12-11 | $224.33 | $1.6M | -5.9% | -10.8% | +2.0% |
| SBAC | SELL | 2023-11-29 | 2023-12-01 | $245.05 | $1.2M | -0.0% | +2.8% | -15.7% |
| SBAC | SELL | 2023-11-10 | 2023-11-14 | $217.62 | $218K | +3.4% | +9.2% | -6.1% |
| SBAC | SELL | 2022-08-15 | 2022-08-16 | $355.50 | $5.8M | -4.1% | -10.8% | -16.0% |
| SBAC | SELL | 2022-08-05 | 2022-08-05 | $343.94 | $4.0M | -0.3% | -8.1% | -22.3% |
| SBAC | SELL | 2022-06-07 | 2022-06-09 | $338.05 | $338K | -6.3% | -2.5% | -1.6% |
| SBAC | SELL | 2021-12-15 | 2021-12-21 | $370.00 | $1.1M | +1.5% | -15.4% | -12.5% |
| SBAC | SELL | 2021-12-13 | 2021-12-15 | $365.67 | $1.1M | +3.7% | -12.0% | -13.1% |
| SBAC | SELL | 2021-08-19 | 2021-08-20 | $358.01 | $4.8M | +1.5% | -2.1% | -4.4% |
| SBAC | SELL | 2021-08-11 | 2021-08-13 | $345.00 | $820K | -1.2% | -0.3% | -3.1% |
| SBAC | SELL | 2021-06-10 | 2021-06-11 | $320.01 | $1.9M | +0.0% | +4.3% | +13.4% |
| SBAC | SELL | 2020-06-01 | 2020-06-03 | $320.03 | $3.3M | -4.1% | -3.1% | -1.8% |
| SBAC | SELL | 2020-05-27 | 2020-05-29 | $304.26 | $4.1M | -2.7% | -8.1% | -2.8% |
| SBAC | SELL | 2020-05-22 | 2020-05-27 | $286.49 | $593K | -3.1% | -3.2% | +0.2% |
| SBAC | SELL | 2020-04-08 | 2020-04-10 | $302.02 | $5.1M | +1.2% | -2.1% | +1.6% |
| SBAC | SELL | 2020-03-04 | 2020-03-06 | $300.74 | $5.2M | -3.8% | +2.6% | +11.1% |
| SBAC | SELL | 2019-05-02 | 2019-05-03 | $205.34 | $2.1M | +1.9% | +5.3% | +19.5% |
| SBAC | SELL | 2019-03-07 | 2019-03-08 | $183.16 | $5.3M | +5.1% | +9.9% | +20.8% |
| SBAC | SELL | 2019-03-05 | 2019-03-06 | $183.00 | $2.2M | +5.1% | +10.3% | +19.3% |
| SBAC | SELL | 2018-11-08 | 2018-11-13 | $171.00 | $1.4M | -4.2% | -0.6% | +6.2% |
| SBAC | SELL | 2018-06-21 | 2018-06-22 | $160.01 | $8.4M | +2.6% | -0.2% | -0.6% |
| SBAC | SELL | 2018-06-13 | 2018-06-15 | $160.01 | $592K | +5.2% | +4.5% | +3.1% |
| SBAC | SELL | 2018-06-05 | 2018-06-07 | $160.12 | $3.4M | +0.6% | +3.5% | -0.5% |
| SBAC | SELL | 2017-08-04 | 2017-08-07 | $140.74 | $2.7M | +2.4% | +8.4% | +18.4% |
| SBAC | SELL | 2017-05-04 | 2017-05-08 | $129.04 | $3.5M | +0.6% | +3.6% | +6.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.