Michael D. Ohalleran is Senior Exec VP at AON CORP (AOC). They have made 6 open-market trades across 3 companies since 2007, most recently 2026-04-28.
CIK 0001023265
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 $7.4M since 2016, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| RYAN | BUY | 2022-11-15 | 2022-11-17 | $33.93 | $2.0M | +11.6% | +11.1% | +19.1% |
| RYAN | BUY | 2021-07-26 | 2021-07-28 | $23.50 | $4.7M | +1.3% | +5.4% | +25.3% |
| NUVA | BUY | 2016-11-04 | 2016-11-08 | $58.26 | $245K | +7.2% | +13.1% | +18.8% |
| NUVA | BUY | 2016-10-31 | 2016-11-02 | $59.47 | $500K | +4.9% | +10.2% | +22.8% |
| AOC | SELL | 2007-05-30 | 2007-05-31 | $42.95 | $7.6M | N/A | N/A | N/A |
| AOC | SELL | 2007-05-30 | 2007-06-01 | $42.98 | $1.0M | 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.