Koppers Holdings Inc.KOP

1 13D/G filings 1 distinct filers 0 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d

0.0%

avg 0.0%

Median 60d

+2.2%

avg +2.2%

Median 90d

—

avg —

Median 180d

—

avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Activist filings

1 SCHEDULE 13D

Distinct filers

single filer

Insiders (365d)

0 buys · 0 sales

Latest short DTC

4.47

as of 2026-09-30

Held by elite portfolio managers

1 holder · $951K

Point72 Asset Mgmt

Filed	Form	Filer	Stake	Shares	Intent
2026-05-19	SCHEDULE 13D	Simcoe Capital Management, LLC	7.00%	1,349,005		view →

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-09-30	800,969	4.47	+4.2%
2026-09-15	769,075	4.75	-19.1%
2026-08-31	950,642	5.84	+21.6%
2026-08-14	781,631	3.09	+9.6%
2026-07-31	713,171	4.55	-5.3%
2026-07-15	753,012	5.04	-8.7%
2026-06-30	825,039	3.99	-1.3%
2026-06-15	836,076	4.96	-21.6%
2026-05-29	1,066,235	6.35	+26.5%
2026-05-15	842,942	3.70	-2.2%
2026-04-30	861,708	6.26	+15.8%
2026-04-15	743,863	4.56	+4.7%

Free. We email you when criteria match. One-click unsubscribe in every email.

Custom alerts · full feed · daily intelligence · API. From $49/mo.