Koppers Holdings Inc.
Koppers Holdings Inc. (KOP) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · KOP · as of Sep 30, 2025
Ownership Breakdown
201
Institutional Holders
▼ 6 vs Q2
$518.21M
Total Inst. Value
▼ $81.39M vs Q2
19.23M
Shares Outstanding
freeFloat 86.96%
18.51M
13F Shares Held
▼ 143,027 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
KOP largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. lumber & wood products (no furniture) | 3.65M | 18.34% | 18.34% | $102.12B | Nov 12, 2025 | ▼ 41.1K |
VANGUARD GROUP INC lumber & wood products (no furniture) | 1.54M | 7.74% | 7.74% | $43.11B | Nov 7, 2025 | ▼ 355.7K |
PZENA INVESTMENT MANAGEMENT LLC lumber & wood products (no furniture) | 1.25M | 6.28% | 6.28% | $34.98B | Nov 7, 2025 | ▲ 1.2K |
DIMENSIONAL FUND ADVISORS LP lumber & wood products (no furniture) | 1.18M | 5.93% | 5.93% | $33.00B | Nov 12, 2025 | ▲ 58 |
FULLER & THALER ASSET MANAGEMENT, INC. lumber & wood products (no furniture) | 1.11M | 5.58% | 5.58% | $31.07B | Nov 13, 2025 | ▼ 2.4K |
LSV ASSET MANAGEMENT lumber & wood products (no furniture) | 954.4K | 4.80% | 4.80% | $26.72B | Nov 6, 2025 | ▲ 139.6K |
STATE STREET CORP lumber & wood products (no furniture) | 769.6K | 3.87% | 3.87% | $21.55B | Nov 14, 2025 | ▼ 7.7K |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC lumber & wood products (no furniture) | 546.3K | 2.75% | 2.75% | $15.30B | Nov 10, 2025 | ▲ 90.0K |
GEODE CAPITAL MANAGEMENT, LLC lumber & wood products (no furniture) | 465.8K | 2.34% | 2.34% | $13.04B | Nov 12, 2025 | ▲ 2.7K |
QUAKER CAPITAL INVESTMENTS, LLC lumber & wood products (no furniture) | 418.4K | 2.10% | 2.10% | $11.71B | Nov 14, 2025 | ▲ 40.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+828.1K shares2
New Positions
first time holders20
Decreased
−880.5K shares0
Sold Out
fully exitedNet shares change (top 50)
52.4K
+828.1K / −880.5K
Net new holders
+6
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
KOP insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
14
Buy transactions
7
Sell transactions
2.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Feng Xudong director | Jun 3, 2026 | Gift | 5,695 | — | — | 26.5K | Form 4 ↗ |
Brenner Eric D. CFO and Treasurer | May 26, 2026 | Award | 6,620 | — | — | 6.6K | Form 4 ↗ |
Pearce Bradley A Interim CFO and CAO | May 12, 2026 | Award | 5,000 | — | — | 43.0K | Form 4 ↗ |
BALL M LEROY CEO | May 13, 2026 | Sale | 2,659 | $42.55 | $113.1K | 444.1K | Form 4 ↗ |
MOTLEY DAVID L director | May 7, 2026 | Award | 3,280 | — | — | 13.2K | Form 4 ↗ |
WILKERSON SONJA MICHELLE director | May 7, 2026 | Award | 3,280 | — | — | 18.0K | Form 4 ↗ |
Sandifer Andrew D director | May 7, 2026 | Award | 3,280 | — | — | 10.1K | Form 4 ↗ |
Posadas Laura J director | May 7, 2026 | Award | 3,280 | — | — | 5.5K | Form 4 ↗ |
Feng Xudong director | May 7, 2026 | Award | 3,280 | — | — | 32.2K | Form 4 ↗ |
Vartanian Nishan J. director | May 7, 2026 | Award | 3,280 | — | — | 10.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Koppers Holdings Inc. (KOP) is primarily owned by institutional investors, who hold approximately 96.2% of total shares outstanding. Company insiders own approximately 13.04%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Koppers Holdings Inc. is BLACKROCK, INC., holding approximately 3.65 million shares — equal to 18.34% of outstanding shares — as of September 30, 2025.
A total of 201 institutional investors currently hold KOP stock, with a combined institutional value of approximately $518,214,820 as of the most recent 13F filing period.
Frequently asked questions
KOP ownershipKoppers Holdings Inc. (KOP) is primarily owned by institutional investors, who hold approximately 96.2% of shares. The largest shareholder is BLACKROCK, INC. with a 18.34% stake. Company insiders hold 13.04%. Data sourced from SEC Form 13F as of September 30, 2025.