2025Q4
| Insider | Role (last 12 mo) | Shares held | Filed at |
|---|---|---|---|
| Informa Plc | — | 41,651,366 | Dec 4, 2024 |
| Hawk Don | — | 168,634 | Dec 3, 2024 |
| Griffey Michael Sean | Director | 150,008 | Aug 15, 2025 |
| Niemiec Steven | Chief Revenue Officer | 141,578 | Sep 2, 2025 |
| Kitchens Rebecca | — | 126,451 | Dec 3, 2024 |
| Exec date | Filing date | Insider | Role | Signal | Confidence | Shares | % of shares | Under plan? | Amount (USD) |
|---|---|---|---|---|---|---|---|---|---|
| Dec 11, 2025 | Dec 15, 2025 | Van Houten Christina | Director | Neutral | 90.0 | +7,904 | 27.22% | ✗ | - |
| Dec 11, 2025 | Dec 15, 2025 | MCDOWELL MARY T | Director | Neutral | 90.0 | +25,774 | 340.52% | ✗ | - |
| Dec 11, 2025 | Dec 15, 2025 | Hawk Don | Director | Neutral | 82.5 | +4,468 | 2.65% | ✗ | - |
| Dec 11, 2025 | Dec 15, 2025 | Griffey Michael Sean | Director | Neutral | 82.5 | +4,468 | 2.98% | ✗ | - |
| Dec 11, 2025 | Dec 15, 2025 | FLASCHEN DAVID J S | Director | Neutral | 90.0 | +6,702 | 28.05% | ✗ | - |
| Dec 11, 2025 | Dec 15, 2025 | Sanchez Perfecto | Director | Sell | 91.3 | +4,149 | 37.79% | ✗ | $10.8K |
| Sep 22, 2025 | Sep 24, 2025 | Noreck Daniel T | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Sep 22, 2025 | Sep 24, 2025 | Niemiec Steven | Chief Revenue Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Sep 22, 2025 | Sep 24, 2025 | Nugent Gary John | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Sep 22, 2025 | Sep 24, 2025 | Rennick Charles D | Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Sep 22, 2025 | Sep 24, 2025 | Morelli William Thomas | President | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Sep 12, 2025 | Sep 15, 2025 | FLASCHEN DAVID J S | Director | Buy | 95.0 | +20,000 | 514.14% | ✗ | $119.3K |
| Sep 12, 2025 | Sep 12, 2025 | Nugent Gary John | CEO | Buy | 91.3 | +4,200 | 100.00% | ✗ | $24.6K |
| Aug 29, 2025 | Sep 2, 2025 | Niemiec Steven | Chief Revenue Officer | Sell | 42.5 | -21,478 | -13.17% | ✗ | $123.5K |
| Aug 22, 2025 | Aug 25, 2025 | Noreck Daniel T | CFO | Sell | 42.5 | -8,459 | -10.58% | ✗ | $50.7K |
| Aug 22, 2025 | Aug 25, 2025 | Tierney Sean Paul | Chief Technology Officer | Sell | 46.3 | -3,112 | -10.48% | ✗ | $18.6K |
| Aug 22, 2025 | Aug 25, 2025 | Rennick Charles D | Officer | Sell | 46.3 | -3,498 | -10.54% | ✗ | $21K |
| Aug 13, 2025 | Aug 15, 2025 | Niemiec Steven | Chief Revenue Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 14, 2025 | Aug 15, 2025 | FLASCHEN DAVID J S | Director | Neutral | 90.0 | +2,250 | 137.20% | ✗ | - |
| Aug 13, 2025 | Aug 15, 2025 | Rennick Charles D | Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 13, 2025 | Aug 15, 2025 | Noreck Daniel T | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 14, 2025 | Aug 15, 2025 | Sanchez Perfecto | Director | Neutral | 90.0 | +2,084 | 23.43% | ✗ | - |
| Aug 13, 2025 | Aug 15, 2025 | Tierney Sean Paul | Chief Technology Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Aug 14, 2025 | Aug 15, 2025 | Van Houten Christina | Director | Neutral | 85.0 | +2,417 | 9.08% | ✗ | - |
| Aug 14, 2025 | Aug 15, 2025 | Griffey Michael Sean | Director | Neutral | 67.5 | +750 | 0.50% | ✗ | - |
| Jul 24, 2025 | Jul 28, 2025 | Van Houten Christina | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jul 24, 2025 | Jul 28, 2025 | Hawk Don | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jul 24, 2025 | Jul 28, 2025 | Griffey Michael Sean | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jul 24, 2025 | Jul 28, 2025 | Sanchez Perfecto | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Jul 24, 2025 | Jul 28, 2025 | FLASCHEN DAVID J S | Director | Neutral | 52.5 | - | 0.00% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | Van Houten Christina | Director | Neutral | 85.0 | +1,893 | 7.66% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | Sanchez Perfecto | Director | Neutral | 90.0 | +1,514 | 20.51% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | FLASCHEN DAVID J S | Director | Neutral | 90.0 | +1,640 | 100.00% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | MCDOWELL MARY T | Director | Neutral | 90.0 | +7,569 | 100.00% | ✗ | - |
| Dec 31, 2024 | Jan 3, 2025 | Griffey Michael Sean | Director | Neutral | 67.5 | +1,010 | 0.68% | ✗ | - |
| Dec 3, 2024 | Dec 26, 2024 | Griffey Michael Sean | Director | Buy | 100.0 | +148,248 | 100.00% | ✗ | $3.5M |
| Dec 4, 2024 | Nugent Gary John | CEO | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | Morelli William Thomas | Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | MCDOWELL MARY T | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | INFORMA PLC | 10% Owner | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | Griffey Michael Sean | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | FLASCHEN DAVID J S | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | Carter Stephen Andrew | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 4, 2024 | Ashford Sally Anne | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Tierney Sean Paul | Chief Technology Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Sanchez Perfecto | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Noreck Daniel T | CFO | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Niemiec Steven | Chief Revenue Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Kitchens Rebecca | President | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Van Houten Christina | Director | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Hawk Don | Officer | Neutral | 52.5 | - | 0.00% | ✗ | - | |
| Dec 3, 2024 | Rennick Charles D | Officer | Neutral | 52.5 | - | 0.00% | ✗ | - |