As of the latest Form 4 filed Jun 15, 2026.
What Affiliated Managers Group, Inc. insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 29 most recent filings for AMG.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-15 | 2026-06-12 | Palandjian Tracy P. Director | FTax | −685.00 | $354.62 | $243K | No | Form 4 ↗ |
| 2026-06-15 | 2026-06-12 | Palandjian Tracy P., Director | MExercise | +2.96K | $82.07 | $243K | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-08 | Horgen Jay C. President and CEO | SSale | −17.5K | $338.27 | $5.92M | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-08 | Horgen Jay C., President and CEO | FTax | −39.7K | $336.62 | $13.4M | No | Form 4 ↗ |
| 2026-06-08 | 2026-06-08 | Horgen Jay C., President and CEO | MExercise | +75.0K | $74.49 | $5.59M | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | FRANQUI ANNETTE Director | PPurchase | +750.00 | $304.88 | $229K | No | Form 4 ↗ |
| 2026-05-08 | 2026-05-08 | Matos Rodriguez Felix V. Director | SSale | −1.00K | $300.18 | $300K | No | Form 4 ↗ |
| 2026-05-08 | 2026-05-06 | Ryan David Christopher Director | SSale | −3.40K | $305.06 | $1.04M | No | Form 4 ↗ |
| 2026-05-06 | 2026-05-06 | Cates G. Staley Director | PPurchase | +1.50K | $305.83 | $459K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-09 | Padiyar Kavita General Counsel & Corp. Sec. | SSale | −2.20K | $278.24 | $612K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-06 | Wojcik Thomas M President and COO | SSale | −8.00K | $286.30 | $2.29M | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Wojcik Thomas M, President and COO | FTax | −9.14K | $299.18 | $2.73M | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Wojcik Thomas M, President and COO | AAward | +10.6K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Wojcik Thomas M, President and COO | MExercise | +7.27K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Padiyar Kavita General Counsel & Corp. Sec. | FTax | −2.28K | $299.18 | $683K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Padiyar Kavita, General Counsel & Corp. Sec. | AAward | +2.43K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Padiyar Kavita, General Counsel & Corp. Sec. | MExercise | +2.29K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Horgen Jay C. Chief Executive Officer | FTax | −18.3K | $299.18 | $5.48M | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Horgen Jay C., Chief Executive Officer | AAward | +27.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Horgen Jay C., Chief Executive Officer | MExercise | +17.6K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | RITCHEA DAVA Chief Financial Officer | FTax | −292.00 | $299.18 | $87.4K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | RITCHEA DAVA, Chief Financial Officer | MExercise | +601.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Alvingham Karen L. Director | FTax | −67.00 | $299.18 | $20.0K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Alvingham Karen L., Director | MExercise | +867.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Ryan David Christopher Director | MExercise | +867.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | STARR LOREN M Director | MExercise | +652.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Matos Rodriguez Felix V. Director | MExercise | +867.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Palandjian Tracy P. Director | MExercise | +867.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | FRANQUI ANNETTE Director | MExercise | +548.00 | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also AMG’s full analysis or the market-wide insider trading feed. The tabs above jump to AMG’s other SEC data.
Source: SEC Form 4 filings for AMG, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.