Michael H. Thaman is CEO & Chairman +1 at Owens Corning (OC). They have made 20 open-market trades across 2 companies since 2006, most recently 2026-10-02.
CIK 0001228309
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.
5 open-market purchases totalling $1.4M since 2006, against 15 sales. Across 5 scored buys the stock is up 7.6% at ninety days, and 5.0 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 20% | 100% | 100% |
| Avg Move | -4.1% | +3.7% | +7.6% |
| Alpha | +0.5% | +2.2% | +5.0% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ULS | BUY | 2024-04-16 | 2024-04-18 | $28.00 | $250K | +3.9% | +12.5% | +32.0% |
| OC | SELL | 2019-12-12 | 2019-12-13 | $65.65 | $3.9M | +0.7% | +0.4% | -38.0% |
| OC | SELL | 2019-11-01 | 2019-11-04 | $62.00 | $3.1M | +2.0% | +2.8% | -3.7% |
| OC | SELL | 2019-08-21 | 2019-08-22 | $57.08 | $1.7M | -1.4% | +7.1% | +18.9% |
| OC | SELL | 2019-06-05 | 2019-06-06 | $51.49 | $1.5M | -7.1% | +7.2% | +5.0% |
| OC | SELL | 2017-11-20 | 2017-11-22 | $85.33 | $8.7M | +1.4% | +4.0% | -0.5% |
| OC | SELL | 2017-09-13 | 2017-09-14 | $74.95 | $9.8M | +1.3% | +5.8% | +14.8% |
| OC | SELL | 2016-12-13 | 2016-12-13 | $55.30 | $1.7M | -4.4% | -5.0% | +11.3% |
| OC | SELL | 2016-12-12 | 2016-12-13 | $55.14 | $5.0M | -4.4% | -5.0% | +11.3% |
| OC | SELL | 2016-12-09 | 2016-12-13 | $55.50 | $12.6M | -4.4% | -5.0% | +11.3% |
| OC | SELL | 2016-12-09 | 2016-12-13 | $55.87 | $5.8M | -4.4% | -5.0% | +11.3% |
| OC | SELL | 2016-08-01 | 2016-08-02 | $53.30 | $2.7M | -0.3% | +2.3% | -9.6% |
| OC | SELL | 2016-07-29 | 2016-08-02 | $53.19 | $8.0M | -0.3% | +2.3% | -9.6% |
| OC | SELL | 2016-07-29 | 2016-08-02 | $53.13 | $5.3M | -0.3% | +2.3% | -9.6% |
| OC | SELL | 2015-11-02 | 2015-11-04 | $46.02 | $4.6M | -6.1% | +1.5% | -2.3% |
| OC | SELL | 2013-03-15 | 2013-03-18 | $40.83 | $4.1M | -6.1% | +1.5% | +1.5% |
| OC | BUY | 2009-03-13 | 2009-03-13 | $7.08 | $177K | -6.1% | +1.5% | +1.5% |
| OC | BUY | 2007-03-21 | 2007-03-22 | $31.78 | $502K | -6.1% | +1.5% | +1.5% |
| OC | BUY | 2006-11-13 | 2006-11-15 | $28.50 | $3K | -6.1% | +1.5% | +1.5% |
| OC | BUY | 2006-11-07 | 2006-11-08 | $27.40 | $501K | -6.1% | +1.5% | +1.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.