John Strosahl is COO at Jamf Holding Corp. (JAMF). They have made 12 open-market trades across 1 company since 2020, most recently 2026-01-30.
CIK 0001806935
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.
1 open-market purchase totalling $200K since 2020, against 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| JAMF | 1,480,451 | $19.3M |
| PRO | 3,614 | $84K |
| Total | $19.4M |
Shares reported on the most recent Form 4, priced at the 2025-10-20 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 |
|---|---|---|---|---|---|---|---|---|
| JAMF | SELL | 2025-10-17 | 2025-10-20 | $9.88 | $863K | +23.5% | +23.6% | +24.9% |
| JAMF | SELL | 2025-06-05 | 2025-06-06 | $10.75 | $347K | -13.8% | -17.1% | -16.4% |
| JAMF | SELL | 2025-03-19 | 2025-03-21 | $13.59 | $1.5M | -4.4% | -20.3% | -31.3% |
| JAMF | SELL · 10b5-1 | 2024-06-04 | 2024-06-06 | $15.42 | $333K | -0.7% | +12.6% | +15.8% |
| JAMF | SELL · 10b5-1 | 2024-06-03 | 2024-06-05 | $15.39 | $385K | +0.3% | +11.2% | +14.3% |
| JAMF | SELL | 2024-03-19 | 2024-03-21 | $17.94 | $1.2M | -1.3% | +6.0% | -17.5% |
| JAMF | SELL · 10b5-1 | 2024-03-18 | 2024-03-20 | $17.89 | $1.2M | -2.5% | +3.0% | -15.9% |
| JAMF | SELL | 2021-12-01 | 2021-12-03 | $31.46 | $952K | +16.4% | +32.2% | +10.2% |
| JAMF | SELL | 2021-09-09 | 2021-09-13 | $37.06 | $2.1M | +9.1% | +16.1% | -8.4% |
| JAMF | SELL · 10b5-1 | 2021-06-04 | 2021-06-08 | $37.09 | $48K | -4.7% | -2.9% | +6.3% |
| JAMF | SELL | 2021-06-02 | 2021-06-04 | $35.47 | $7.7M | -12.0% | -4.7% | -0.7% |
| JAMF | SELL | 2021-06-01 | 2021-06-03 | $34.05 | $6.4M | -14.5% | -8.4% | -3.5% |
| JAMF | SELL | 2021-02-16 | 2021-02-18 | $39.66 | $1.2M | -0.9% | -5.9% | -25.9% |
| JAMF | SELL | 2021-01-28 | 2021-02-01 | $37.38 | $4.5M | +1.5% | -2.8% | -7.2% |
| JAMF | SELL | 2021-01-27 | 2021-01-29 | $37.02 | $474K | +4.8% | +6.3% | +0.8% |
| JAMF | BUY | 2020-07-21 | 2020-07-23 | $26.00 | $200K | +1.0% | +1.7% | -13.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.