Marcus Jewell is CRO & VP at JUNIPER NETWORKS INC (JNPR). They have made 6 open-market trades across 2 companies since 2022, most recently 2026-08-21.
CIK 0001875661
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 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CLBT | 427,128 | $4.7M |
| JNPR | 56,561 | $2.3M |
| Total | $7.0M |
Shares reported on the most recent Form 4, priced at the 2026-08-24 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 |
|---|---|---|---|---|---|---|---|---|
| CLBT | SELL | 2026-08-21 | 2026-08-24 | $11.24 | $141K | +5.1% | +1.1% | — |
| CLBT | SELL | 2026-08-12 | 2026-08-13 | $16.07 | $7K | +4.2% | +7.7% | — |
| CLBT | SELL | 2026-05-18 | 2026-05-19 | $12.77 | $162K | +19.5% | -3.9% | -21.6% |
| CLBT | SELL | 2026-05-12 | 2026-05-14 | $13.01 | $5K | -2.2% | +0.8% | +17.9% |
| JNPR | SELL | 2022-03-16 | 2022-03-17 | $34.01 | $194K | +8.7% | +1.3% | -17.5% |
| JNPR | SELL | 2022-03-03 | 2022-03-04 | $34.37 | $1.8M | +0.3% | +8.0% | -8.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.