Samuel R. Rubio is Senior VP and CFO at GULFMARK OFFSHORE INC (GLF). They have made 16 open-market trades across 2 companies since 2009, most recently 2026-08-12.
CIK 0001452077
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 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TDW | 33,214 | $2.6M |
| GLF | 9,483 | $269K |
| Total | $2.9M |
Shares reported on the most recent Form 4, priced at the 2026-08-14 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 |
|---|---|---|---|---|---|---|---|---|
| TDW | SELL | 2026-08-12 | 2026-08-14 | $91.56 | $1.6M | -5.6% | -5.9% | — |
| TDW | SELL | 2026-03-05 | 2026-03-06 | $80.05 | $1.8M | -1.4% | +11.9% | -2.7% |
| TDW | SELL | 2024-05-08 | 2024-05-09 | $107.39 | $5.2M | +0.1% | -1.1% | -20.6% |
| TDW | SELL | 2024-03-05 | 2024-03-07 | $81.36 | $3.2M | +13.5% | +24.2% | +18.4% |
| TDW | SELL | 2023-08-14 | 2023-08-16 | $62.37 | $2.7M | -2.1% | +8.9% | -2.1% |
| TDW | SELL | 2019-12-11 | 2019-12-11 | $16.26 | $2K | +14.1% | +6.5% | -46.9% |
| TDW | SELL | 2019-03-15 | 2019-03-18 | $23.34 | $181K | -6.3% | -2.3% | -11.8% |
| GLF | SELL | 2013-08-01 | 2013-08-02 | $50.05 | $193K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2012-03-30 | 2012-04-02 | $45.96 | $46K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2012-03-28 | 2012-03-29 | $46.92 | $45K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2012-03-14 | 2012-03-16 | $48.30 | $35K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2011-06-15 | 2012-02-14 | $40.28 | $11K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2011-06-15 | 2011-06-17 | $40.28 | $11K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2011-03-14 | 2011-03-16 | $44.74 | $38K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2010-03-13 | 2010-03-16 | $28.49 | $19K | -38.2% | -0.6% | -0.6% |
| GLF | SELL · Routine | 2009-06-15 | 2009-06-16 | $31.13 | $16K | -38.2% | -0.6% | -0.6% |
| GLF | SELL | 2009-06-06 | 2009-06-09 | $31.39 | $6K | -38.2% | -0.6% | -0.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.