Margaret K. Dorman is Treasurer & Executive VP at SMITH INTERNATIONAL INC (SII). They have made 8 open-market trades across 3 companies since 2007, most recently 2026-05-13.
CIK 0001184601
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.
4 open-market purchases totalling $511K since 2019, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ETRN | 46,840 | $582K |
| RRC | 10,225 | $442K |
| HC | 25,200 | — |
| SII | 103,115 | — |
| Total | $1.0M |
Shares reported on the most recent Form 4, priced at the 2026-05-15 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 |
|---|---|---|---|---|---|---|---|---|
| RRC | SELL | 2026-03-17 | 2026-03-19 | $43.38 | $542K | +0.2% | -8.8% | -18.7% |
| ETRN | BUY | 2019-11-07 | 2019-11-08 | $12.25 | $86K | -21.3% | -19.4% | -22.1% |
| RRC | BUY | 2019-08-27 | 2019-08-29 | $3.40 | $70K | +26.2% | +2.1% | -2.7% |
| ETRN | BUY | 2019-08-01 | 2019-08-01 | $16.11 | $250K | -16.5% | -22.5% | -13.6% |
| ETRN | BUY | 2019-03-22 | 2019-03-26 | $20.18 | $106K | +6.2% | +5.8% | +2.6% |
| SII | SELL | 2008-06-30 | 2008-07-02 | $82.43 | $4.9M | N/A | N/A | N/A |
| SII | SELL | 2007-09-06 | 2007-09-10 | $69.40 | $3.6M | N/A | N/A | N/A |
| SII | SELL | 2007-03-21 | 2007-03-23 | $46.20 | $4.1M | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.