Company · Ownership research

DIAMOND HILL INVESTMENT GROUP INC DHIL

CIK 0000909108

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider tradingInitial holdingsInstitutional holders

Insider filings on file run through 2026-04-22.

Insider purchases & sales

Purchased: $1.29M
Sold: $4.56M

Sep 1, 2023 – Apr 22, 2026
Available records · partial months are marked ·

202510 of 16 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2025-09-23	Thomas L'Quentus Director	Sale	$35.27K 250 shares sold	8.98% sold Direct holding	▾
2025-09-12	Thomas L'Quentus Director	Purchase	$1.80K 13 shares bought	0.49% added Direct holding	▾
2025-09-05	Meyer Paula R Director	Sale	$49.63K 350 shares sold	8.51% sold Direct holding	▾
2025-06-13	Thomas L'Quentus Director	Purchase	$1.79K 12 shares bought	0.47% added Direct holding	▾
2025-06-13	Quinif Jo Ann President of DHCM	Sale	$396.00K 2,750 shares sold	10.67% sold Direct holding	▾
2025-06-13	Quinif Jo Ann President of DHCM	Purchase	$396.03K 2,750 shares bought	11.95% added Direct holding	▾
2025-05-06	Cooley Richard Scott Director	Purchase	$37.28K 278 shares bought	2.05% added Direct holding	▾
2025-05-02	Cooley Richard Scott Director	Purchase	$16.00K 124 shares bought	0.92% added Direct holding	▾
2025-05-01	Cooley Richard Scott Director	Purchase	$88.23K 692 shares bought	5.43% added Direct holding	▾
2025-04-30	Cooley Richard Scott Director	Purchase	$124.50K 1,000 shares bought	8.52% added Direct holding	▾

Showing 16 / 16 record groups in 2025. The complete set is available through the API.

DIAMOND HILL INVESTMENT GROUP INC · DHIL

Follow the people behind the trades.

Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and reach other datasets through the Akkru API.

Download CSV
Earlier filings
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 16 of 16 purchase / sale groups and 15 of 15 other groups; the totals and the monthly series cover the whole window.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.

MCP  https://api.akkrudata.ai/mcp

list_insider_transactions
{"ticker":"DHIL","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.