Charles J. Prober is Director at Life360, Inc. (LIF). They have made 7 open-market trades across 2 companies since 2017, most recently 2026-10-13.
CIK 0001696247
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 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NTGR | 426,294 | $9.4M |
| LIF | 109,930 | $4.5M |
| SCPL | 21,207 | $486K |
| GPRO | 53,540 | $56K |
| LIFX | 478,323 | — |
| PrivateUnlisted | 488,095 | — |
| Total | $14.5M |
Shares reported on the most recent Form 4, priced at the 2026-10-15 close. 2 holdings could not be priced and are excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| LIF | SELL · 10b5-1 | 2026-10-13 | 2026-10-15 | $43.29 | $343K | — | — | — |
| LIF | SELL · 10b5-1 | 2026-09-14 | 2026-09-16 | $42.12 | $334K | -1.9% | +0.7% | — |
| LIF | SELL · 10b5-1 | 2026-08-13 | 2026-08-17 | $48.59 | $385K | -7.8% | -15.0% | — |
| LIF | SELL · 10b5-1 | 2026-07-13 | 2026-07-15 | $53.05 | $421K | -4.0% | -8.6% | -24.0% |
| LIF | SELL · 10b5-1 | 2026-06-15 | 2026-06-17 | $46.07 | $365K | +16.1% | +12.7% | -11.5% |
| LIF | SELL · 10b5-1 | 2026-05-13 | 2026-05-15 | $40.44 | $321K | +2.4% | +20.6% | +24.0% |
| LIF | SELL · 10b5-1 | 2026-04-13 | 2026-04-15 | $37.27 | $296K | -4.6% | -17.2% | +13.7% |
| LIF | SELL · 10b5-1 | 2026-03-13 | 2026-03-17 | $41.40 | $328K | -6.6% | +11.5% | +18.3% |
| LIF | SELL | 2026-02-13 | 2026-02-18 | $49.02 | $389K | +5.3% | -22.9% | -23.6% |
| LIF | SELL | 2026-01-13 | 2026-01-15 | $61.98 | $492K | +3.4% | -17.7% | -29.3% |
| LIF | SELL · 10b5-1 | 2025-12-15 | 2025-12-17 | $68.30 | $542K | +6.5% | -9.3% | -33.6% |
| LIF | SELL · 10b5-1 | 2025-11-13 | 2025-11-17 | $76.93 | $1.2M | +15.2% | -12.5% | -28.3% |
| LIF | SELL · 10b5-1 | 2025-10-13 | 2025-10-15 | $103.20 | $818K | +1.2% | -27.6% | -35.7% |
| LIF | SELL · 10b5-1 | 2025-09-15 | 2025-09-17 | $100.24 | $1.6M | +4.9% | -13.1% | -36.2% |
| LIF | SELL · 10b5-1 | 2025-08-13 | 2025-08-15 | $84.13 | $1.3M | +6.9% | +20.4% | -14.0% |
| LIF | SELL · 10b5-1 | 2025-07-14 | 2025-07-16 | $64.41 | $1.0M | +6.4% | +19.3% | +40.5% |
| LIF | SELL · 10b5-1 | 2025-06-13 | 2025-06-17 | $61.63 | $979K | +4.8% | +14.7% | +64.5% |
| LIF | SELL | 2025-03-04 | 2025-03-06 | $41.52 | $2.1M | -2.8% | -21.9% | +55.4% |
| NTGR | SELL · 10b5-1 | 2025-02-20 | 2025-02-24 | $26.64 | $582K | -7.6% | -4.4% | +18.3% |
| LIF | SELL | 2024-09-11 | 2024-09-12 | $32.45 | $1.3M | +16.4% | +28.4% | +27.8% |
| LIF | SELL | 2024-06-17 | 2024-06-20 | $27.00 | $3.0M | +1.4% | +5.3% | +9.9% |
| LIF | SELL | 2024-06-07 | 2024-06-11 | $27.00 | $7.1M | +17.1% | +27.1% | +25.4% |
| GPRO | SELL | 2017-09-11 | 2017-09-12 | $11.00 | $274K | +0.3% | -10.6% | -23.5% |
| GPRO | SELL · 10b5-1 | 2017-02-17 | 2017-02-17 | $9.20 | $15K | -0.5% | -7.1% | -11.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.