Diamond Hill Investment Group, Inc. DHIL NASDAQ

NASDAQ Global Select • Financial Services • Asset Management • US • USD

Diamond Hill Investment Group, Inc. (DHIL) has 20 known insider and institutional holders on record. The largest holder is DILLON RODERICK H JR with 79,341 shares. Other notable holders include Hawley Austin and BRILLIANT HEATHER E.

Over the last 12 months, insiders have made 28 transactions in DHIL stock — 19 buys (valued at $278.44K) and 3 sells (valued at $480.91K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.

DHIL Insider Ownership

Top Holder

DILLON RODERICK H JR

79,341 shares

Buys (12 mo)

$278.44K value

Sells (12 mo)

$480.91K value

12-Month Transaction Activity

Buy 68%

Sell 11%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Dillon Roderick H Jr	Director	79,341	2019-01-16	100%
2	Hawley Austin	Director	77,469	2026-04-06	98%
3	Brilliant Heather E	Chief Executive Officer	66,680	2026-04-06	84%
4	Quinif Jo Ann	President of Dhcm	45,111	2026-04-06	57%
5	Bingaman Christopher M	Chief Executive Officer	43,992	2019-02-22	55%
6	Mathias James J	Director	35,152	2009-02-25	44%
7	Wesolek Lisa M	Chief Operating Officer	32,436	2018-02-23	41%
8	Meuse David R	Director	31,505	2011-02-28	40%
9	Cooley Richard Scott	Director	13,829	2025-05-07	17%
10	Moran Peter J	Director	13,575	2013-02-13	17%
11	Line Thomas Edward	Chief Financial Officer	13,444	2026-04-06	17%
12	Laird James F Jr	Director	12,500	2024-12-11	16%
13	Shackelford Donald B	Director	11,705	2013-02-13	15%
14	Shoup Bradley C	Director	9,450	2017-05-05	12%
15	Fortener Randolph J.	Director	8,600	2020-06-11	11%
16	Reeder Paul Arlington Iii	Director	8,000	2015-04-30	10%
17	Lauer David P	Director	7,785	2013-02-13	10%
18	Fowler Gordon B	Director	7,713	2025-05-01	10%
19	Skinner Frances A	Director	7,300	2017-03-14	9%
20	St. Pierre Nicole Renee	Director	5,113	2025-05-01	6%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-04-01	Hawley Austin	Director	Tax Withholding of RSU	1,181	$172.10	$203.25K
2026-04-01	Quinif Jo Ann	President of Dhcm	Tax Withholding of RSU	2,080	$172.10	$357.97K
2026-04-01	Brilliant Heather E	Chief Executive Officer	Tax Withholding of RSU	2,809	$172.10	$483.43K
2026-04-01	Line Thomas Edward	Chief Financial Officer	Tax Withholding of RSU	664	$172.10	$114.27K
2025-09-12	Thomas L'quentus	Director	Informative Buy	13	$143.00	$1.86K
2025-06-13	Thomas L'quentus	Director	Informative Buy	12	$146.51	$1.76K
2025-03-21	Thomas L'quentus	Director	Informative Buy	12	$146.50	$1.76K
2024-12-06	Thomas L'quentus	Director	Informative Buy	11	$165.07	$1.82K
2024-09-13	Thomas L'quentus	Director	Informative Buy	14	$152.34	$2.13K
2024-06-14	Thomas L'quentus	Director	Informative Buy	7	$149.44	$1.05K
2024-03-22	Thomas L'quentus	Director	Informative Buy	7	$151.87	$1.06K
2023-12-08	Thomas L'quentus	Director	Informative Buy	6	$166.59	$999.54
2025-10-29	Nordin Diane C	Director	Unknown	-	-	-
2025-10-01	Quinif Jo Ann	President of Dhcm	RSU Award	21,428	-	-
2025-09-23	Thomas L'quentus	Director	Informative Sell	250	$141.10	$35.28K
2025-09-05	Meyer Paula R	Director	Informative Sell	350	$141.80	$49.63K
2025-06-30	Brilliant Heather E	Chief Executive Officer	RSU Award	27,528	-	-
2025-06-13	Quinif Jo Ann	President of Dhcm	Informative Sell	2,750	$144.00	$396K
2025-05-27	Hawley Austin	Director	Unknown	-	-	-
2025-05-06	Cooley Richard Scott	Director	Informative Buy	278	$134.10	$37.28K
2025-05-02	Cooley Richard Scott	Director	Informative Buy	124	$129.00	$16K
2025-05-01	Cooley Richard Scott	Director	Informative Buy	692	$127.50	$88.23K
2025-04-29	Fowler Gordon B	Director	RSU Award	926	-	-
2025-04-29	Thomas L'quentus	Director	RSU Award	926	-	-
2025-04-29	St. Pierre Nicole Renee	Director	RSU Award	926	-	-