Company · Ownership research

Koppers Holdings Inc. KOP

CIK 0001315257

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 45 rows; the complete set is available through the API.

Insider filings on file run through Sep 15, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $21.37M

Nov 1, 2023 – Sep 15, 2026
Available records · partial months are marked ·

2023, from Nov 1, 202310 of 17 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 20, 2023	BALL M LEROY President and CEO · Director	Sale	$344.89K 7,000 shares sold	2.31% sold Direct holding	▾
Dec 20, 2023	Pearce Bradley A Chief Accounting Officer	Sale	$49.82K 1,000 shares sold	3.43% sold Direct holding	▾
Dec 14, 2023	Dowd Joseph P VP, Zero Harm	Sale	$117.86K 2,600 shares sold	6.89% sold Direct holding	▾
Dec 14, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$26.74K 594 shares sold	0.62% sold Direct holding	▾
Dec 13, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$966.91K 21,866 shares sold	Unavailable Direct holding	▾
Dec 12, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$17.58K 397 shares sold	0.42% sold Direct holding	▾
Dec 11, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$166.70K 3,781 shares sold	3.84% sold Direct holding	▾
Dec 8, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$703.14K 15,901 shares sold	14.37% sold Direct holding	▾
Dec 7, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$646.10K 14,542 shares sold	13.30% sold Direct holding	▾
Dec 6, 2023	Sullivan James A. Ex. VP Chief Operating Officer	Sale	$92.99K 2,067 shares sold	2.13% sold Direct holding	▾

Showing 17 / 17 record groups in 2023. The complete set is available through the API.

Koppers Holdings Inc. · KOP

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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 17 of 17 purchase / sale groups and 30 of 45 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"KOP","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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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. Share totals are on today's split-adjusted basis. 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.