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Affiliated Managers Group, Inc. (AMG) · Insider trading

What Affiliated Managers Group's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$687,405
2 insiders, 2 trades
Sold, 12 months
$10.16M
5 insiders, 0% under a plan
Net, 12 months
−$9.47M
bought less sold
Latest filing
2026-09-25
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2025-01 2025-07 2025-09: $3.70M sold 2026-01 2026-03: $2.90M sold 2026-05: $458,745 bought 2026-05: $1.34M sold 2026-06: $228,660 bought 2026-06: $5.92M sold 2026-07
Bought Sold Largest month: $5.92M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Wojcik Thomas MPresident and COO – $5.99M 2 2026-03-06 159,465
Horgen Jay C.Director, President and CEO – $5.92M 1 2026-06-08 204,706
Ryan David ChristopherDirector – $1.04M 1 2026-05-06 1,092
Padiyar KavitaGeneral Counsel & Corp. Sec. – $612,128 1 2026-03-09 42,672
Cates G. StaleyDirector $458,745 – 1 2026-05-06 6,405
Matos Rodriguez Felix V.Director – $300,180 1 2026-05-08 4,369
Franqui AnnetteDirector $228,660 – 1 2026-06-01 1,962

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-06-08 Horgen Jay C.Director, President and CEO Sale 17,500 338.27 $5.92M 204,706 Form 4
2026-06-01 Franqui AnnetteDirector Buy 750 304.88 $228,660 1,962 Form 4
2026-05-08 Matos Rodriguez Felix V.Director Sale 1,000 300.18 $300,180 4,369 Form 4
2026-05-06 Ryan David ChristopherDirector Sale 3,402 305.06 $1.04M 1,092 Form 4
2026-05-06 Cates G. StaleyDirector Buy 1,500 305.83 $458,745 6,405 Form 4
2026-03-09 Padiyar KavitaGeneral Counsel & Corp. Sec. Sale 2,200 278.24 $612,128 42,672 Form 4
2026-03-06 Wojcik Thomas MPresident and COO Sale 8,000 286.30 $2.29M 159,465 Form 4
2025-09-09 Wojcik Thomas MPresident and COO Sale 16,000 231.03 $3.70M 158,710 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

46 × option exercise21 × shares withheld for tax6 × grant or award4 × gift
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-08-15 Matos Rodriguez Felix V.Director Option exercise M +848 – 5,217 Form 4/A
2026-08-15 Palandjian Tracy P.Director Option exercise M +848 – 18,375 Form 4
2026-08-15 Starr Loren MDirector Option exercise M +716 – 2,653 Form 4
2026-08-15 Franqui AnnetteDirector Option exercise M +477 – 2,439 Form 4
2026-06-12 Palandjian Tracy P.Director Option exercise M +2,958 82.07 18,212 Form 4
2026-06-12 Palandjian Tracy P.Director Shares withheld for tax F −685 354.62 17,527 Form 4
2026-06-08 Horgen Jay C.Director, President and CEO Option exercise M +75,000 74.49 261,877 Form 4
2026-06-08 Horgen Jay C.Director, President and CEO Shares withheld for tax F −39,671 336.62 222,206 Form 4
2026-03-05 Franqui AnnetteDirector Option exercise M +548 – 1,212 Form 4
2026-03-05 Palandjian Tracy P.Director Option exercise M +867 – 15,254 Form 4
2026-03-05 Matos Rodriguez Felix V.Director Option exercise M +867 – 5,369 Form 4
2026-03-05 Starr Loren MDirector Option exercise M +652 – 1,937 Form 4
2026-03-05 Ryan David ChristopherDirector Option exercise M +867 – 4,494 Form 4
2026-03-05 Alvingham Karen L.Director Option exercise M +867 – 13,110 Form 4
2026-03-05 Alvingham Karen L.Director Shares withheld for tax F −67 299.18 13,043 Form 4
2026-03-05 Ritchea DavaChief Financial Officer Option exercise M +601 – 601 Form 4
2026-03-05 Ritchea DavaChief Financial Officer Shares withheld for tax F −292 299.18 309 Form 4
2026-03-05 Horgen Jay C.Director, Chief Executive Officer Option exercise M +17,563 – 327,950 Form 4
2026-03-05 Horgen Jay C.Director, Chief Executive Officer Grant or award A +27,260 – 355,210 Form 4
2026-03-05 Horgen Jay C.Director, Chief Executive Officer Shares withheld for tax F −18,333 299.18 336,877 Form 4
2026-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Option exercise M +2,288 – 44,728 Form 4
2026-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Grant or award A +2,426 – 47,154 Form 4
2026-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Shares withheld for tax F −2,282 299.18 44,872 Form 4
2026-03-05 Wojcik Thomas MPresident and COO Option exercise M +7,272 – 165,982 Form 4
2026-03-05 Wojcik Thomas MPresident and COO Grant or award A +10,619 – 176,601 Form 4
2026-03-05 Wojcik Thomas MPresident and COO Shares withheld for tax F −9,136 299.18 167,465 Form 4
2025-12-23 Horgen Jay C.Director, Chief Executive Officer Gift G −4,000 – 510,387 Form 4
2025-11-25 Palandjian Tracy P.Director Gift G −3,499 – 14,387 Form 4
2025-11-07 Alvingham Karen L.Director Option exercise M +560 69.63 12,425 Form 4
2025-11-07 Alvingham Karen L.Director Shares withheld for tax F −182 259.26 12,243 Form 4
2025-09-08 Wojcik Thomas MPresident and COO Option exercise M +169,303 74.49 288,718 Form 4
2025-09-08 Wojcik Thomas MPresident and COO Shares withheld for tax F −114,008 231.19 174,710 Form 4
2025-09-02 Padiyar KavitaGeneral Counsel & Corp. Sec. Option exercise M +47,731 73.81 73,431 Form 4
2025-09-02 Padiyar KavitaGeneral Counsel & Corp. Sec. Shares withheld for tax F −30,991 229.97 42,440 Form 4
2025-09-02 Horgen Jay C.Director, Chief Executive Officer Option exercise M +75,000 74.49 559,322 Form 4
2025-09-02 Horgen Jay C.Director, Chief Executive Officer Shares withheld for tax F −44,935 229.97 514,387 Form 4
2025-08-15 Palandjian Tracy P.Director Option exercise M +1,117 – 17,886 Form 4
2025-08-15 Matos Rodriguez Felix V.Director Option exercise M +1,102 – 4,502 Form 4
2025-08-15 Franqui AnnetteDirector Option exercise M +664 – 664 Form 4
2025-08-15 Alvingham Karen L.Director Option exercise M +1,092 – 11,949 Form 4
2025-08-15 Alvingham Karen L.Director Shares withheld for tax F −84 218.70 11,865 Form 4
2025-08-15 Starr Loren MDirector Option exercise M +544 – 1,285 Form 4
2025-08-15 Ryan David ChristopherDirector Option exercise M +1,092 – 3,627 Form 4
2025-08-15 Churchill Dwight D.Director Option exercise M +1,398 – 29,030 Form 4
2025-08-12 Horgen Jay C.Director, Chief Executive Officer Option exercise M +75,000 74.49 529,929 Form 4
2025-08-12 Horgen Jay C.Director, Chief Executive Officer Shares withheld for tax F −45,607 219.70 484,322 Form 4
2025-07-02 Horgen Jay C.Director, Chief Executive Officer Gift G −14,000 – 454,929 Form 4
2025-07-02 Horgen Jay C.Director, Chief Executive Officer Gift G +14,000 – 34,058 Form 4
2025-07-01 Horgen Jay C.Director, Chief Executive Officer Option exercise M +75,000 74.49 516,120 Form 4
2025-07-01 Horgen Jay C.Director, Chief Executive Officer Shares withheld for tax F −47,191 198.72 468,929 Form 4
2025-05-12 Palandjian Tracy P.Director Option exercise M +1,353 160.01 16,512 Form 4
2025-05-12 Palandjian Tracy P.Director Option exercise M +1,787 110.02 18,299 Form 4
2025-05-12 Palandjian Tracy P.Director Option exercise M +1,361 86.78 19,660 Form 4
2025-05-12 Palandjian Tracy P.Director Shares withheld for tax F −2,891 183.83 16,769 Form 4
2025-05-12 Churchill Dwight D.Director Option exercise M +1,353 160.01 28,810 Form 4
2025-05-12 Churchill Dwight D.Director Shares withheld for tax F −1,178 183.83 27,632 Form 4
2025-05-09 Padiyar KavitaGeneral Counsel & Corp. Sec. Option exercise M +25,000 73.81 43,107 Form 4
2025-05-09 Padiyar KavitaGeneral Counsel & Corp. Sec. Shares withheld for tax F −17,407 179.17 25,700 Form 4
2025-03-05 Starr Loren MDirector Option exercise M +741 – 741 Form 4
2025-03-05 Ryan David ChristopherDirector Option exercise M +956 – 2,535 Form 4
2025-03-05 Palandjian Tracy P.Director Option exercise M +1,195 – 15,159 Form 4
2025-03-05 Matos Rodriguez Felix V.Director Option exercise M +1,165 – 3,400 Form 4
2025-03-05 Churchill Dwight D.Director Option exercise M +1,535 – 27,457 Form 4
2025-03-05 Alvingham Karen L.Director Option exercise M +1,178 – 10,947 Form 4
2025-03-05 Alvingham Karen L.Director Shares withheld for tax F −90 165.72 10,857 Form 4
2025-03-05 Wojcik Thomas MChief Operating Officer Option exercise M +7,287 – 113,080 Form 4
2025-03-05 Wojcik Thomas MChief Operating Officer Grant or award A +20,555 – 133,635 Form 4
2025-03-05 Wojcik Thomas MChief Operating Officer Shares withheld for tax F −14,220 165.72 119,415 Form 4
2025-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Option exercise M +2,236 – 17,485 Form 4
2025-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Grant or award A +3,252 – 20,737 Form 4
2025-03-05 Padiyar KavitaGeneral Counsel & Corp. Sec. Shares withheld for tax F −2,630 165.72 18,107 Form 4
2025-03-05 Horgen Jay C.Director, President and CEO Option exercise M +16,693 – 419,439 Form 4
2025-03-05 Horgen Jay C.Director, President and CEO Grant or award A +48,251 – 467,690 Form 4
2025-03-05 Horgen Jay C.Director, President and CEO Shares withheld for tax F −26,570 165.72 441,120 Form 4
2025-01-01 Palandjian Tracy P.Director Option exercise M +31 – 13,964 Form 4
2025-01-01 Jeffery Reuben IIIDirector Option exercise M +5 – 34,274 Form 4
2025-01-01 Churchill Dwight D.Director Option exercise M +191 – 25,922 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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