Matt Steinfort is CFO at Zayo Group Holdings, Inc. (ZAYO). They have made 12 open-market trades across 2 companies since 2017, most recently 2026-09-03.
CIK 0001717324
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 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DOCN | 503,692 | $49.7M |
| ZAYO | 30,437 | $1.1M |
| Total | $50.8M |
Shares reported on the most recent Form 4, priced at the 2026-09-03 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 |
|---|---|---|---|---|---|---|---|---|
| DOCN | SELL · 10b5-1 | 2026-09-03 | 2026-09-03 | $105.73 | $1.1M | +12.1% | +24.0% | — |
| DOCN | SELL · 10b5-1 | 2026-06-02 | 2026-06-03 | $170.07 | $1.7M | +10.2% | -20.1% | -34.0% |
| DOCN | SELL | 2026-05-15 | 2026-05-19 | $152.50 | $3.8M | +14.3% | +14.4% | -10.8% |
| DOCN | SELL | 2026-03-03 | 2026-03-03 | $55.40 | $1.1M | +22.7% | +61.1% | +209.9% |
| DOCN | SELL · 10b5-1 | 2025-03-04 | 2025-03-04 | $40.00 | $500K | -11.0% | -23.1% | -30.1% |
| DOCN | SELL · 10b5-1 | 2024-12-04 | 2024-12-06 | $40.00 | $500K | -14.4% | -12.4% | -1.2% |
| DOCN | SELL · 10b5-1 | 2024-09-11 | 2024-09-13 | $40.00 | $500K | +0.7% | +8.3% | -2.8% |
| ZAYO | SELL | 2020-02-10 | 2020-02-11 | $34.90 | $361K | +0.1% | N/A | N/A |
| ZAYO | SELL | 2020-01-03 | 2020-01-06 | $34.66 | $625K | +0.2% | +0.7% | N/A |
| ZAYO | SELL | 2019-10-02 | 2019-10-03 | $33.88 | $792K | +0.8% | +1.3% | +2.5% |
| ZAYO | SELL | 2019-09-13 | 2019-09-16 | $33.82 | $152K | +0.0% | +0.9% | +1.6% |
| ZAYO | SELL | 2019-07-02 | 2019-07-03 | $33.05 | $521K | +1.1% | +2.0% | +2.3% |
| ZAYO | SELL | 2019-01-03 | 2019-01-07 | $24.16 | $250K | +2.7% | +6.8% | +18.2% |
| ZAYO | SELL · 10b5-1 | 2018-10-04 | 2018-10-09 | $34.01 | $66K | -2.7% | -31.3% | -24.5% |
| ZAYO | SELL · 10b5-1 | 2018-10-03 | 2018-10-04 | $34.14 | $83K | -4.3% | -10.8% | -32.4% |
| ZAYO | SELL | 2018-07-09 | 2018-07-11 | $38.50 | $57K | -5.4% | -4.3% | -16.7% |
| ZAYO | SELL · 10b5-1 | 2018-07-03 | 2018-07-05 | $37.31 | $65K | +1.1% | -1.7% | -10.4% |
| ZAYO | SELL | 2018-04-05 | 2018-04-09 | $36.39 | $162K | +2.4% | -5.1% | +7.4% |
| ZAYO | SELL | 2018-04-03 | 2018-04-03 | $35.38 | $125K | +3.1% | +0.9% | +4.3% |
| ZAYO | SELL | 2018-01-02 | 2018-01-08 | $36.37 | $128K | -1.4% | -0.5% | -2.4% |
| ZAYO | SELL · 10b5-1 | 2017-10-04 | 2017-10-05 | $34.95 | $28K | +1.2% | -1.1% | +4.7% |
| ZAYO | SELL · 10b5-1 | 2017-10-04 | 2017-10-20 | $34.95 | $22K | -2.5% | -0.2% | -2.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.