Diane J. Gherson is President & VP at INTERNATIONAL BUSINESS MACHINES CORP (IBM). They have made 10 open-market trades across 1 company since 2014, most recently 2026-05-14.
CIK 0001578371
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 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IBM | SELL | 2020-08-10 | 2020-08-11 | $128.74 | $994K | -3.5% | -5.5% | -9.5% |
| IBM | SELL | 2020-08-05 | 2020-08-07 | $126.73 | $298K | -1.3% | -3.4% | -8.5% |
| IBM | SELL | 2019-02-13 | 2019-02-14 | $137.25 | $546K | +1.2% | +1.9% | -2.3% |
| IBM | SELL | 2019-02-05 | 2019-02-06 | $135.67 | $1.6M | +3.9% | +1.2% | +3.1% |
| IBM | SELL | 2018-08-03 | 2018-08-06 | $145.42 | $1.7M | -0.9% | -0.0% | -18.2% |
| IBM | SELL | 2018-02-26 | 2018-02-27 | $156.00 | $780K | +1.1% | -2.6% | -10.3% |
| IBM | SELL | 2017-02-13 | 2017-02-14 | $179.18 | $1.6M | -0.4% | -1.6% | -15.9% |
| IBM | SELL | 2016-05-06 | 2016-05-09 | $147.00 | $439K | -2.2% | +3.9% | +9.3% |
| IBM | SELL | 2015-02-13 | 2015-02-17 | $160.00 | $136K | -3.3% | +0.3% | +0.3% |
| IBM | SELL | 2014-08-04 | 2014-08-05 | $189.81 | $332K | -3.3% | +0.3% | +0.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.