KOP
Koppers Holdings Inc.
Latest close $51.99 as of Aug 4, 2026
Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred
from changes in reported shares when available; it is not a list of individual trades or exact execution prices.
Form 13F rows are quarter-end holding context only and do not establish an exact entry date.
Free access includes current parsed ownership filings, reported share changes, and ownership-percentage changes.
Significance scoring, disclosure-speed analysis, confirmation/divergence signals, and signal alerts require Investor or Pro.
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Beneficial ownership filing history
Showing 3 of 6 parsed filing(s) · 3 older require more history access| Holder | Observed / filed | Reported change | Shares | Ownership | Observation | Filing | Latest |
|---|---|---|---|---|---|---|---|
| Vanguard Capital Management CIK0002100119 | Jun 30, 2026 observed Jul 31, 2026 filed · 31d Schedule 13G amendment | Earliest Schedule 13G amendment found | 955.2K | 12.00% | $44.90 | $49.02 | $51.99 |
| BlackRock CIK0002012383 | Mar 31, 2026 observed Apr 24, 2026 filed · 24d Schedule 13G amendment | Reported reduction | 3.0M -866.4K | 15.30% -3.30 pts | $38.68 | $40.28 | $51.99 |
| BlackRock CIK0002012383 | Sep 30, 2024 quarter end Nov 13, 2024 filed Form 13F quarter-end evidence | Earlier Form 13F quarter-end holding Quarter-end holding evidence; no ownership percentage or signal. | 3.8M | $51.99 |