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SCHEDULE 13D/A Filed 2026-10-22 Event 2026-10-20 SEC 0000921895-26-002844 →

Simcoe Capital Management, LLC → Koppers Holdings Inc. KOP

Stake: — Shares: 1,063,279 Class: Common Stock
Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 27/100
  • Active Schedule 13D filer baseline
  • Held by 1 tracked 13F institutional manager
  • Moderate short days-to-cover (4.5 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
2 13D/G filings on this issuer
1 other filing besides this one
Filer Track Record
6 filings by this filer
5 other filings in the data moat
Short Interest · settle 2026-09-30
DTC 4.47
800,969 shares short · +4.2% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $951K
Point72 Asset Mgmt

Other 13D/G Filings on Koppers Holdings Inc.

FiledFormFilerStakeShares
2026-05-19 SCHEDULE 13D Simcoe Capital Management, LLC 7.00% 1,349,005 view →

Other Filings by Simcoe Capital Management, LLC

FiledFormIssuerStakeShares
2026-05-19 SCHEDULE 13D Koppers Holdings Inc. KOP 7.00% 1,349,005 view →
2023-11-07 SC Donnelley Financial Solutions, Inc. DFIN — — view →
2022-11-14 SC Donnelley Financial Solutions, Inc. DFIN — — view →
2019-12-02 SC Donnelley Financial Solutions, Inc. DFIN — — view →
2019-02-19 SC Donnelley Financial Solutions, Inc. DFIN — — view →

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