AFFILIATED MANAGERS GROUP

Ticker: AMG CUSIP: 008252108 Class: COM

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 34,908 Value ($000) $10,063 Avg Close $258.45 Range $230.09 - $299.69

Q3 2025

Shares 19,476 Value ($000) $4,644 Avg Close $220.39 Range $194.74 - $250.14

Q2 2025

Shares 19,476 Value ($000) $3,832 Avg Close $173.47 Range $139.20 - $199.47

Q1 2019

Shares 15,645 Value ($000) $1,676 Avg Close $104.33 Range $93.26 - $110.96

Q4 2018

Shares 6,161 Value ($000) $593 Avg Close $110.59 Range $86.74 - $136.36

Q3 2018

Shares 1,081 Value ($000) $148 Avg Close $144.30 Range $133.37 - $159.64

Q2 2018

Shares 3,160 Value ($000) $470 Avg Close $160.74 Range $145.08 - $182.71

Q1 2018

Shares 4,808 Value ($000) $913 Avg Close $189.64 Range $169.45 - $211.08

Q4 2017

Shares 1,081 Value ($000) $222 Avg Close $188.42 Range $173.99 - $202.01

Q1 2017

Shares 952 Value ($000) $156 Avg Close $153.31 Range $135.07 - $166.39

Q2 2016

Shares 2,491 Value ($000) $351 Avg Close $158.47 Range $126.98 - $174.12

Q1 2016

Shares 2,491 Value ($000) $405 Avg Close $135.06 Range $112.27 - $159.84

Q4 2015

Shares 1,726 Value ($000) $276 Avg Close $166.43 Range $137.16 - $184.66

Q3 2015

Shares 1,726 Value ($000) $295 Avg Close $190.37 Range $159.30 - $214.73

Q2 2015

Shares 1,726 Value ($000) $377 Avg Close $215.27 Range $205.22 - $223.28

Q1 2015

Shares 1,726 Value ($000) $371 Avg Close $204.27 Range $185.26 - $214.40

Q4 2014

Shares 1,104 Value ($000) $234 Avg Close $192.32 Range $168.87 - $209.59

Q3 2014

Shares 660 Value ($000) $132 Avg Close $197.54 Range $186.21 - $207.58

Q2 2014

Shares 660 Value ($000) $136 Avg Close $187.17 Range $171.21 - $199.62

Q1 2014

Shares 319 Value ($000) $64 Avg Close $190.16 Range $175.09 - $212.40

Q4 2013

Shares 319 Value ($000) $69 Avg Close $193.15 Range $175.92 - $210.55

Q3 2013

Shares 319 Value ($000) $58 Avg Close $171.93 Range $151.62 - $183.39

Q2 2013

Shares 319 Value ($000) $52 Avg Close $153.14 Range $138.12 - $166.12

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	34,908	$10,063	$258.45	$230.09 - $299.69
Q3 2025	19,476	$4,644	$220.39	$194.74 - $250.14
Q2 2025	19,476	$3,832	$173.47	$139.20 - $199.47
Q1 2019	15,645	$1,676	$104.33	$93.26 - $110.96
Q4 2018	6,161	$593	$110.59	$86.74 - $136.36
Q3 2018	1,081	$148	$144.30	$133.37 - $159.64
Q2 2018	3,160	$470	$160.74	$145.08 - $182.71
Q1 2018	4,808	$913	$189.64	$169.45 - $211.08
Q4 2017	1,081	$222	$188.42	$173.99 - $202.01
Q1 2017	952	$156	$153.31	$135.07 - $166.39
Q2 2016	2,491	$351	$158.47	$126.98 - $174.12
Q1 2016	2,491	$405	$135.06	$112.27 - $159.84
Q4 2015	1,726	$276	$166.43	$137.16 - $184.66
Q3 2015	1,726	$295	$190.37	$159.30 - $214.73
Q2 2015	1,726	$377	$215.27	$205.22 - $223.28
Q1 2015	1,726	$371	$204.27	$185.26 - $214.40
Q4 2014	1,104	$234	$192.32	$168.87 - $209.59
Q3 2014	660	$132	$197.54	$186.21 - $207.58
Q2 2014	660	$136	$187.17	$171.21 - $199.62
Q1 2014	319	$64	$190.16	$175.09 - $212.40
Q4 2013	319	$69	$193.15	$175.92 - $210.55
Q3 2013	319	$58	$171.93	$151.62 - $183.39
Q2 2013	319	$52	$153.14	$138.12 - $166.12