Langenbacher Stefano (CIK 2015428) reported 20 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-15). Recent activity: Buy SEAT (44,491 shares), Sell SEAT (19,262 shares), Buy SEAT (592 shares), Sell SEAT (221 shares), Buy SEAT (44,491 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 44,491 | $0 |
| 2026-09-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 19,262 | $95,347 |
| 2026-08-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 592 | $0 |
| 2026-08-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 221 | $1,604 |
| 2026-06-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 44,491 | $0 |
| 2026-06-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 19,708 | $168,109 |
| 2026-05-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 592 | $0 |
| 2026-05-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 256 | $2,222 |
| 2026-03-13 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 57,836 | $0 |
| 2026-03-13 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 25,620 | $156,282 |
| 2026-02-17 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 592 | $0 |
| 2026-02-17 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 252 | $1,716 |
| 2025-12-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 1,817 | $0 |
| 2025-12-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 804 | $6,086 |
| 2025-11-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 2,368 | $0 |
| 2025-11-14 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 693 | $6,556 |
| 2025-09-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 1,817 | $0 |
| 2025-09-15 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 804 | $13,933 |
| 2025-06-13 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Buy | 36,337 | $0 |
| 2025-06-13 | Vivid Seats Inc. (SEAT) | Chief Technology Officer | Sell | 15,977 | $28,599 |
来源：SEC Form 4 申报文件 · 截至 2026-09-15