Updated Jul 16, 2026
Horgen Jay C. has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $5.92M.

Jay C. Horgen is the President and CEO of Affiliated Managers Group, Inc. (AMG), a firm that specializes in acquiring and supporting boutique asset management firms. He has held various leadership roles within the company and has been instrumental in its strategic growth.
| Role | President and CEO, Director |
|---|---|
| Notability | 50/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-08 | AMG | AFFILIATED MANAGERS GROUP, INC. | S — Open-market sale | 17.5K | $338.27 | $5.92M |
| 2026-06-08 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 39.7K | $336.62 | $13.35M |
| 2026-06-08 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 75.0K | $74.49 | $5.59M |
| 2026-03-09 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 18.3K | $299.18 | $5.48M |
| 2026-03-09 | AMG | AFFILIATED MANAGERS GROUP, INC. | A — Grant or award | 27.3K | $0.00 | |
| 2026-03-09 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 17.6K | $0.00 | |
| 2025-12-23 | AMG | AFFILIATED MANAGERS GROUP, INC. | G — Bona-fide gift | 4.0K | $0.00 | |
| 2025-09-02 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 44.9K | $229.97 | $10.33M |
| 2025-09-02 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 75.0K | $74.49 | $5.59M |
| 2025-08-12 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 45.6K | $219.70 | $10.02M |
| 2025-08-12 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 75.0K | $74.49 | $5.59M |
| 2025-07-01 | AMG | AFFILIATED MANAGERS GROUP, INC. | G — Bona-fide gift | 14.0K | $0.00 | |
| 2025-07-01 | AMG | AFFILIATED MANAGERS GROUP, INC. | G — Bona-fide gift | 14.0K | $0.00 | |
| 2025-07-01 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 47.2K | $198.72 | $9.38M |
| 2025-07-01 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 75.0K | $74.49 | $5.59M |
| 2024-10-04 | AMG | AFFILIATED MANAGERS GROUP, INC. | F — Tax withholding / forfeiture | 65.2K | $180.25 | $11.76M |
| 2024-10-04 | AMG | AFFILIATED MANAGERS GROUP, INC. | M — Option exercise | 100.0K | $74.49 | $7.45M |
Jay C. Horgen is the President and CEO of Affiliated Managers Group, Inc. (AMG), a firm that specializes in acquiring and supporting boutique asset management firms. He has held various leadership roles within the company and has been instrumental in its strategic growth.…
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 1 open-market sales ($5.92M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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