Juan Font is VP at CoreSite Realty Corp (COR). They have made 11 open-market trades across 2 companies since 2018, most recently 2026-10-30.
CIK 0001733553
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 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COR | 30,735 | $10.9M |
| AMT | 27,810 | $5.4M |
| Total | $16.3M |
Shares reported on the most recent Form 4, priced at the 2026-11-03 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 | 2026-10-30 | 2026-11-03 | $189.63 | $112K | — | — | — |
| AMT | SELL | 2025-07-31 | 2025-08-01 | $208.33 | $300K | -3.4% | -5.1% | -15.1% |
| AMT | SELL | 2024-03-15 | 2024-03-19 | $197.49 | $213K | -1.2% | -12.5% | -1.6% |
| COR | SELL | 2021-08-05 | 2021-08-09 | $139.11 | $167K | -0.5% | +3.7% | +5.1% |
| COR | SELL | 2021-05-24 | 2021-05-26 | $120.50 | $48K | +2.2% | +0.8% | +2.3% |
| COR | SELL | 2021-03-17 | 2021-03-17 | $115.67 | $225K | +4.7% | +5.3% | +4.7% |
| COR | SELL · 10b5-1 | 2021-03-10 | 2021-03-10 | $112.83 | $26K | +5.1% | +5.5% | +6.5% |
| COR | SELL | 2021-03-05 | 2021-03-05 | $110.20 | $168K | +8.0% | +10.8% | +10.6% |
| COR | SELL · 10b5-1 | 2020-03-23 | 2020-03-25 | $94.20 | $5K | +13.7% | +16.9% | +33.8% |
| COR | SELL | 2020-03-19 | 2020-03-20 | $104.67 | $105K | +7.4% | +11.6% | +24.9% |
| COR | SELL | 2020-03-17 | 2020-03-17 | $108.04 | $137K | -3.7% | +1.6% | +13.3% |
| COR | SELL · 10b5-1 | 2020-03-09 | 2020-03-11 | $103.01 | $26K | -8.1% | +6.2% | +24.2% |
| COR | SELL · 10b5-1 | 2020-03-05 | 2020-03-06 | $109.90 | $13K | +6.6% | +8.3% | +24.8% |
| COR | SELL · 10b5-1 | 2020-03-03 | 2020-03-04 | $107.86 | $36K | -8.5% | -7.6% | +12.1% |
| COR | SELL | 2019-05-02 | 2020-01-22 | $111.80 | $169K | -7.0% | +5.2% | -7.2% |
| COR | SELL · 10b5-1 | 2019-03-21 | 2019-03-25 | $107.44 | $5K | -2.1% | -4.5% | +7.7% |
| COR | SELL · 10b5-1 | 2019-03-19 | 2019-03-19 | $103.80 | $30K | -1.7% | -10.4% | +5.5% |
| COR | SELL · 10b5-1 | 2019-03-12 | 2019-03-14 | $102.78 | $24K | -3.7% | -4.3% | +7.4% |
| COR | SELL · 10b5-1 | 2019-03-05 | 2019-03-06 | $101.70 | $67K | +4.4% | +0.3% | +6.7% |
| COR | SELL | 2018-05-03 | 2018-05-07 | $103.94 | $239K | +2.9% | +3.0% | -2.9% |
| COR | SELL · 10b5-1 | 2018-03-22 | 2018-03-22 | $103.30 | $5K | +1.1% | +6.3% | +9.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.