Were any of the DIAMOND HILL (DHIL) share purchases by Thomas L'Quentus inadvertent?

Yes. Footnotes state several transactions were inadvertent purchases through a broker-administered dividend reinvestment plan. These automatic reinvestments acquired small amounts of Diamond Hill common shares without active trading decisions, and some were later matched against prior sales under Section 16(b).

What prior DIAMOND HILL (DHIL) share sales are referenced in the Form 4 footnotes?

Footnotes reference a 250-share sale at $161.64 on September 23, 2024 and a 250-share sale at $141.10 on September 23, 2025 , each reported on earlier Forms 4. These sales were used to assess short-swing profit treatment under Section 16(b).

Diamond Hill (DHIL) director adds shares and repays short-swing profit

Q: How many DIAMOND HILL (DHIL) shares does Thomas L'Quentus hold after these Form 4 trades?

After the latest reported purchase on September 12, 2025 , Thomas L'Quentus directly holds 2,602.051 Diamond Hill common shares . This figure reflects cumulative small acquisitions reported on Form 4, including both open-market buys and dividend reinvestment plan purchases.

Filing Impact

(Neutral)

Filing Sentiment

(Positive)

Form Type

Rhea-AI Filing Summary

Diamond Hill Investment Group director Thomas L'Quentus reported a series of small open‑market and dividend reinvestment purchases of the company’s common shares. Across eight transactions from December 2023 through September 2025, he acquired a total of 80.534 common shares, bringing his direct holdings to 2,602.051 shares after the most recent purchase on September 12, 2025 at $143.00 per share.

Footnotes explain that several purchases were inadvertent acquisitions through a broker‑administered dividend reinvestment plan. Certain purchases were matchable against a 250‑share sale at $161.64 on September 23, 2024 and another 250‑share sale at $141.10 on September 23, 2025 under Section 16(b), creating short‑swing profits of $82.12 and $128.59. These amounts were disgorged in full to the issuer as stated.

Insider Trade Summary

Net Buyer: 80.534 shares ($12,206)

Net Buy 8 txns

Insider Thomas L'Quentus

Role Director

Bought 80.534 shs ($12K)

Type	Security	Shares	Price	Value
Purchase	Common Shares	12.618	$143.00	$2K
Purchase	Common Shares	12.191	$146.51	$2K
Purchase	Common Shares	12.069	$146.50	$2K
Purchase	Common Shares	10.615	$165.07	$2K
Purchase	Common Shares	13.827	$152.34	$2K
Purchase	Common Shares	6.731	$149.44	$1K
Purchase	Common Shares	6.558	$151.87	$995.96
Purchase	Common Shares	5.925	$166.59	$987.05

Holdings After Transaction: Common Shares — 2,602.051 shares (Direct)

Footnotes (1)

Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. The reporting person sold 250 common shares at $161.64 per share on September 23, 2024, which was reported on Form 4 filed on September 24, 2024 (the "2024 Sale"). This purchase and the 2024 Sale were matchable under Section 16(b) of the Securities Exchange Act of 1934, and resulted in a short swing profit of $82.12, which was disgorged in full to the issuer by the reporting person. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. This purchase and the 2024 Sale were matchable under Section 16(b) of the Securities Exchange Act of 1934, and resulted in a short swing profit of $128.59, which was disgorged in full to the issuer by the reporting person. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. Although this purchase was matchable against the 2024 Sale under Section 16(b) of the Securities Exchange Act of 1934, no profit was realized by the reporting person. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. The reporting person sold 250 common shares at $141.10 per share on September 23, 2025, which was reported on Form 4 filed on September 25, 2025 (the "2025 Sale"). Although this purchase was matchable against the 2024 Sale under Section 16(b) of the Securities Exchange Act of 1934, no profit was realized by the reporting person. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan.

Form 4 Insider Transactions: What Each Field Means →

03/10/2026 - 03:48 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Thomas L'Quentus

(Last)

(First)

(Middle)

325 JOHN H MCCONNELL BLVD

SUITE 200

(Street)

COLUMBUS

43215

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
DIAMOND HILL INVESTMENT GROUP INC [ DHIL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/08/2023

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares	06/14/2024		P⁽¹⁾		6.731	A	$149.44	2,540.731	D
Common Shares	09/13/2024		P⁽²⁾		13.827	A	$152.34	2,554.558	D
Common Shares	12/06/2024		P⁽³⁾		10.615	A	$165.07	2,565.173	D
Common Shares	03/21/2025		P⁽³⁾		12.069	A	$146.5	2,577.242	D
Common Shares	06/13/2025		P⁽⁴⁾		12.191	A	$146.51	2,589.433	D
Common Shares	09/12/2025		P⁽⁴⁾		12.618	A	$143	2,602.051	D
Common Shares	03/22/2024		P⁽⁵⁾		6.558	A	$151.87	2,608.609	D
Common Shares	12/08/2023		P⁽⁵⁾		5.925	A	$166.59	2,614.534	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. The reporting person sold 250 common shares at $161.64 per share on September 23, 2024, which was reported on Form 4 filed on September 24, 2024 (the "2024 Sale"). This purchase and the 2024 Sale were matchable under Section 16(b) of the Securities Exchange Act of 1934, and resulted in a short swing profit of $82.12, which was disgorged in full to the issuer by the reporting person.

2. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. This purchase and the 2024 Sale were matchable under Section 16(b) of the Securities Exchange Act of 1934, and resulted in a short swing profit of $128.59, which was disgorged in full to the issuer by the reporting person.

3. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. Although this purchase was matchable against the 2024 Sale under Section 16(b) of the Securities Exchange Act of 1934, no profit was realized by the reporting person.

4. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan. The reporting person sold 250 common shares at $141.10 per share on September 23, 2025, which was reported on Form 4 filed on September 25, 2025 (the "2025 Sale"). Although this purchase was matchable against the 2024 Sale under Section 16(b) of the Securities Exchange Act of 1934, no profit was realized by the reporting person.

5. Inadvertent purchase of the issuer's common shares through a broker-administered dividend reinvestment plan.

Remarks:

The Amount of Securities Beneficially Owned Following the Reported Transaction (Table I, Column 5) in Mr. Thomas' most recent Form 4 (filed on September 25, 2025) was 2,534 common shares. When reporting delinquent transactions, the tally should be based on (i.e., should reflect adjustments to) the number of shares reported as beneficially owned in the insider's last filed report, and should not attempt to show the number of shares owned as of the date of each transaction being reported late (if different).

	Carlotta D. King by POA	03/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Thomas L'Quentus report for DIAMOND HILL (DHIL)?

Thomas L'Quentus reported eight small open-market and dividend reinvestment purchases of Diamond Hill common shares, totaling 80.534 shares. These transactions occurred between December 2023 and September 2025, gradually increasing his direct ownership position in the company over time.

How many DIAMOND HILL (DHIL) shares does Thomas L'Quentus hold after these Form 4 trades?

After the latest reported purchase on September 12, 2025, Thomas L'Quentus directly holds 2,602.051 Diamond Hill common shares. This figure reflects cumulative small acquisitions reported on Form 4, including both open-market buys and dividend reinvestment plan purchases.

What short-swing profits were identified and repaid in the DIAMOND HILL (DHIL) Form 4 filing?

The filing notes short-swing profits of $82.12 and $128.59 arising from matchable purchase and sale pairs under Section 16(b). According to the footnotes, these short-swing profits were disgorged in full to Diamond Hill Investment Group by the reporting person.

Does the DIAMOND HILL (DHIL) Form 4 mention any derivative securities or option exercises?

No derivative securities or option exercises are shown in the provided data. The transactions all involve non-derivative common shares coded as open-market or dividend reinvestment purchases, and the derivative position summary is empty in this Form 4 excerpt.