INNOSPEC INC. (IOSP) Corporate Subsidiaries
INNOSPEC INC. (IOSP) is a publicly traded company on the Nasdaq, categorized under SIC 2800 (Chemicals & Allied Products). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: IOSP
CIK: 1054905
Exchange: Nasdaq
SIC 2800: Chemicals & Allied Products
Fiscal Year End: 12/31
State: DE
Independent PCAOB Auditor
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Audit Firm
PricewaterhouseCoopers LLP
Auditor SinceSince 12/31/2019 12:00:00 AM
Lead Engagement PartnerRebecca Gissing
Audit LocationManchester, United Kingdom
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| SCHEDULE 13G/A | 2026-10-07 | — | SCHEDULE 13G/A Filing | 0001890906-26-000074 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-10-07 | — | SCHEDULE 13G Filing | 0001890906-26-000068 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414699 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414694 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414685 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414672 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414650 | View SEC Doc Filr Page |
| 4 | 2026-10-05 | 2026-10-01 | 4 | 0001193125-26-414645 | View SEC Doc Filr Page |
| 10-Q | 2026-08-05 | 2026-06-30 | 10-Q | 0001193125-26-334178 | View SEC Doc Filr Page |
| 8-K | 2026-08-05 | 2026-08-04 | 8-K | 0001193125-26-333724 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-07-31 | — | SCHEDULE 13G/A Filing | 0001890906-26-000051 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-07-14 | — | SCHEDULE 13G Filing | 0000354204-26-000796 | View SEC Doc Filr Page |
| 3 | 2026-07-01 | 2026-07-01 | 3 | 0001193125-26-292819 | View SEC Doc Filr Page |
| 8-K | 2026-06-04 | 2026-06-02 | 8-K | 0001193125-26-257531 | View SEC Doc Filr Page |
| SD | 2026-05-29 | — | SD | 0001193125-26-246179 | View SEC Doc Filr Page |
| 8-K | 2026-05-13 | 2026-05-08 | 8-K | 0001193125-26-220407 | View SEC Doc Filr Page |
| 10-Q | 2026-05-08 | 2026-03-31 | 10-Q | 0001193125-26-213510 | View SEC Doc Filr Page |
| 8-K | 2026-05-08 | 2026-05-07 | 8-K | 0001193125-26-213160 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-04-30 | — | SCHEDULE 13G Filing | 0002100119-26-000640 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-04-29 | — | SCHEDULE 13G Filing | 0002100121-26-000422 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-03-27 | — | SCHEDULE 13G/A Filing | 0000102909-26-001596 | View SEC Doc Filr Page |
| DEFA14A | 2026-03-26 | — | DEFA14A | 0001174947-26-000428 | View SEC Doc Filr Page |
| DEF 14A | 2026-03-26 | 2026-05-08 | DEF 14A | 0001174947-26-000427 | View SEC Doc Filr Page |
| ARS | 2026-03-24 | 2025-12-31 | ARS | 0001193125-26-120767 | View SEC Doc Filr Page |
| 4/A | 2026-03-06 | 2026-02-27 | 4/A | 0001193125-26-097180 | View SEC Doc Filr Page |