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CIK 0000909108

DHIL DIAMOND HILL INVESTMENT GROUP INC

Insider trading from SEC Form 4. Last filing Apr 22, 2026.

In brief

DIAMOND HILL INVESTMENT GROUP INC (DHIL) has 49 SEC Form 4 filings on file from 10 insiders, the latest filed on Apr 22, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

22 open-market trades have been scored at DHIL. The newest: L'Quentus Thomas (director) bought $12k of stock on Dec 8, 2023, filed Mar 10, 2026, scored 15 (weak). The largest of the 22 shown: James F Laird Jr (director) sold $1.0M on Nov 21, 2024, scored 65 (notable). 3 insiders sold within 14 days of each other around Nov 21, 2024.

9 Form 144 notices of planned sales are on file, the latest filed Sep 5, 2025.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
10
with a Form 4 at this company

Signals

Open-market buys and sells at DIAMOND HILL INVESTMENT GROUP INC, scored.

ScoreInsiderValueHoldingsPrice contextFiled
15WeakL'Quentus Thomas
director
buy
$12k
81 shares
+3%-
21WeakL'Quentus Thomas
director
sell
$35k
250 shares
-9%-
22WeakPaula R Meyer
director
sell
$50k
350 shares
-9%-
39WeakJo Ann Quinif
President of DHCM
buy
$396k
2,750 shares
+12%-
51ModerateJo Ann Quinif
President of DHCM
sell
$396k
2,750 shares
-11%-
26WeakRichard Scott Cooley
director
buy
$37k
278 shares
+2%-
15WeakRichard Scott Cooley
director
buy
$16k
124 shares
+1%-
32WeakRichard Scott Cooley
director
buy
$88k
692 shares
+5%-
33WeakRichard Scott Cooley
director
buy
$125k
1,000 shares
+9%-
15WeakRichard Scott Cooley
director
buy
$14k
100 shares
+1%-
15WeakRichard Scott Cooley
director
buy
$7,175
50 shares
+0%-
28WeakRichard Scott Cooley
director
buy
$72k
500 shares
+5%-
31WeakRichard Scott Cooley
director
buy
$73k
500 shares
+5%-
26WeakRichard Scott Cooley
director
buy
$39k
272 shares
+3%-
29WeakRichard Scott Cooley
director
buy
$152k
1,000 shares
+12%-
65NotableJames F Laird Jr
director
sell
$1.0M
6,000 shares
-32%-
37WeakPaula R Meyer
director
sell
$51k
300 shares
-9%-
41ModerateJames F Laird Jr
director
sell
$171k
1,000 shares
-5%-
37WeakNicole Renee St. Pierre
director
sell
$50k
300 shares
-7%-
58ModerateJames F Laird Jr
director
sell
$843k
5,000 shares
-20%-
33WeakJames F Laird Jr
director
sell
$510k
3,000 shares
-9%-
27WeakHeather E Brilliant
Chief Executive Officer
buy
$49k
325 shares
+1%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Sep 5, 2025 Meyer Paula R
Director
350
0.01% of outstanding
$51kSep 12, 2025none
Jun 17, 2025 Quinif Jo Ann
Affiliate
2,750
0.10% of outstanding
$396kJun 13, 2025$396k
May 14, 2025 LAIRD JAMES F JR
Former Affiliate
4,500
0.17% of outstanding
$645kMay 16, 2025none
May 6, 2025 LAIRD JAMES F JR
Former Affiliate
8,000
0.29% of outstanding
$1.1MMay 6, 2025none
Nov 18, 2024 LAIRD JAMES F JR
Director
6,000
0.22% of outstanding
$1.0MNov 18, 2024$1.0M
Nov 14, 2024 Meyer Paula R
Director
300
0.01% of outstanding
$51kNov 18, 2024none
Nov 8, 2024 St. Pierre Nicole Renee
Director
300
0.01% of outstanding
$49kNov 8, 2024none
Nov 5, 2024 LAIRD JAMES F JR
Director
6,000
0.22% of outstanding
$945kNov 5, 2024$451k
Dec 18, 2023 LAIRD JAMES F JR
Director
3,000
0.10% of outstanding
$501kDec 18, 2023none

Transactions

The newest 50 of 64 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Apr 22, 2026Jo Ann Quinif
President of DHCM
DDisposition to issuer
Common
-45,111$175.00$7.9M0Apr 22, 2026
Apr 22, 2026Gordon B Fowler
director
DDisposition to issuer
Common
-7,713$175.00$1.3M0Apr 22, 2026
Apr 22, 2026Thomas Edward Line
Chief Financial Officer
DDisposition to issuer
Common
-13,444$175.00$2.4M0Apr 22, 2026
Apr 22, 2026L'Quentus Thomas
director
DDisposition to issuer
Common
-2,615$175.00$458k0Apr 22, 2026
Apr 22, 2026Richard Scott Cooley
director
DDisposition to issuer
Common
-13,829$175.00$2.4M0Apr 22, 2026
Apr 22, 2026Heather E Brilliant
Chief Executive Officer
DDisposition to issuer
Common
-66,680$175.00$12M0Apr 22, 2026
Apr 22, 2026Austin Hawley
director
DDisposition to issuer
Common
-77,469$175.00$14M0Apr 22, 2026
Apr 22, 2026Nicole Renee St. Pierre
director
DDisposition to issuer
Common
-5,113$175.00$895k0Apr 22, 2026
Apr 22, 2026Paula R Meyer
director
DDisposition to issuer
Common
-3,763$175.00$659k0Apr 22, 2026
Apr 22, 2026Heather E Brilliant
Chief Executive Officer
DDisposition to issuer
Commonindirect: By 401K
-473$175.00$83k0Apr 22, 2026
Apr 22, 2026Jo Ann Quinif
President of DHCM
DDisposition to issuer
Commonindirect: By 401K
-816$175.00$143k0Apr 22, 2026
Apr 22, 2026Thomas Edward Line
Chief Financial Officer
DDisposition to issuer
Commonindirect: By 401K
-1,294$175.00$226k0Apr 22, 2026
Apr 1, 2026Austin Hawley
director
FTax withholding
Common
-1,181$172.10$203k77,469Apr 6, 2026
Apr 1, 2026Heather E Brilliant
Chief Executive Officer
FTax withholding
Common
-2,809$172.10$483k66,680Apr 6, 2026
Apr 1, 2026Jo Ann Quinif
President of DHCM
FTax withholding
Common
-2,080$172.10$358k45,111Apr 6, 2026
Apr 1, 2026Thomas Edward Line
Chief Financial Officer
FTax withholding
Common
-664$172.10$114k13,444Apr 6, 2026
Jun 14, 2024L'Quentus Thomas
director
POpen-market purchase
Common Shares
+7$149.44$1,0062,541Mar 10, 2026
Sep 13, 2024L'Quentus Thomas
director
POpen-market purchase
Common Shares
+14$152.34$2,1062,555Mar 10, 2026
Dec 6, 2024L'Quentus Thomas
director
POpen-market purchase
Common Shares
+11$165.07$1,7522,565Mar 10, 2026
Mar 21, 2025L'Quentus Thomas
director
POpen-market purchase
Common Shares
+12$146.50$1,7682,577Mar 10, 2026
Jun 13, 2025L'Quentus Thomas
director
POpen-market purchase
Common Shares
+12$146.51$1,7862,589Mar 10, 2026
Sep 12, 2025L'Quentus Thomas
director
POpen-market purchase
Common Shares
+13$143.00$1,8042,602Mar 10, 2026
Mar 22, 2024L'Quentus Thomas
director
POpen-market purchase
Common Shares
+7$151.87$9962,609Mar 10, 2026
Dec 8, 2023L'Quentus Thomas
director
POpen-market purchase
Common Shares
+6$166.59$9872,615Mar 10, 2026
Oct 1, 2025Jo Ann Quinif
President of DHCM
AGrant or award
Common
+21,428$0.00$047,191Oct 1, 2025
Sep 23, 2025L'Quentus Thomas
director
SOpen-market sale
Common
-250$141.10$35k2,534Sep 25, 2025
Sep 5, 2025Paula R Meyer
director
SOpen-market sale
Common
-350$141.80$50k3,763Sep 9, 2025
Jun 30, 2025Heather E Brilliant
Chief Executive Officer
AGrant or award
Common
+27,528$0.00$069,489Jul 1, 2025
Jun 13, 2025Jo Ann Quinif
President of DHCM
SOpen-market sale
Common
-2,750$144.00$396k23,013Jun 17, 2025
Jun 13, 2025Jo Ann Quinif
President of DHCM
POpen-market purchase
Common
+2,750$144.01$396k25,763Jun 17, 2025
May 6, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+278$134.10$37k13,829May 7, 2025
May 2, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+124$129.00$16k13,551May 6, 2025
May 1, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+692$127.50$88k13,427May 2, 2025
Apr 29, 2025L'Quentus Thomas
director
AGrant or award
Common
+926$0.00$02,784May 1, 2025
Apr 29, 2025Gordon B Fowler
director
AGrant or award
Common
+926$0.00$07,713May 1, 2025
Apr 29, 2025Richard Scott Cooley
director
AGrant or award
Common
+926$0.00$011,735May 1, 2025
Apr 29, 2025Paula R Meyer
director
AGrant or award
Common
+926$0.00$04,113May 1, 2025
Apr 29, 2025Nicole Renee St. Pierre
director
AGrant or award
Common
+926$0.00$05,113May 1, 2025
Apr 30, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+1,000$124.50$125k12,735May 1, 2025
Apr 1, 2025Heather E Brilliant
Chief Executive Officer
JOther
Common
+167$121.41$20k44,189Apr 3, 2025
Apr 1, 2025Thomas Edward Line
Chief Financial Officer
FTax withholding
Common
-795$142.84$114k14,108Apr 3, 2025
Apr 1, 2025Jo Ann Quinif
President of DHCM
JOther
Common
+167$121.41$20k27,899Apr 3, 2025
Apr 1, 2025Heather E Brilliant
Chief Executive Officer
FTax withholding
Common
-2,228$142.84$318k41,961Apr 3, 2025
Apr 1, 2025Jo Ann Quinif
President of DHCM
FTax withholding
Common
-2,136$142.84$305k25,763Apr 3, 2025
Mar 31, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+100$142.50$14k10,809Apr 1, 2025
Mar 21, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+50$143.50$7,17510,709Mar 24, 2025
Mar 12, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+500$144.00$72k10,659Mar 14, 2025
Mar 5, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+500$146.00$73k10,159Mar 6, 2025
Feb 28, 2025Richard Scott Cooley
director
POpen-market purchase
Common
+272$144.00$39k9,659Mar 3, 2025
Feb 21, 2025Heather E Brilliant
Chief Executive Officer
AGrant or award
Common
+8,550$0.00$044,022Feb 24, 2025
50 of 64 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about DHIL

Answered from the filings on this page, as of the latest one.

Are insiders buying DHIL?

No. In the last 90 days no insider at DIAMOND HILL INVESTMENT GROUP INC bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade DHIL on the open market?

L'Quentus Thomas (director) bought $12k of DHIL on Dec 8, 2023 and filed the Form 4 on Mar 10, 2026. InsiderTell scored 15 (weak).

How many insiders file Form 4 at DIAMOND HILL INVESTMENT GROUP INC?

10 people have filed a Form 4 at DIAMOND HILL INVESTMENT GROUP INC, among them Heather E Brilliant (Chief Executive Officer), Richard Scott Cooley (director), Gordon B Fowler (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

DHIL insider trading: DIAMOND HILL INVESTMENT GROUP INC | InsiderTell