Cristina Larkin is COO at Spero Therapeutics, Inc. (SPRO). They have made 3 open-market trades across 1 company since 2017, most recently 2022-02-01.
CIK 0001721173
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 $21K since 2017, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SPRO | 63,581 | $70K |
Shares reported on the most recent Form 4, priced at the 2022-02-03 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.