IOSP — INNOSPEC INC

Ownership history in Western Standard LLC  ·  2 quarters on record

This page tracks every 13F SEC filing in which Western Standard LLC reported a position in INNOSPEC INC (IOSP). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
9.48% (2025 Q4)
Avg. % of fund
5.05%
First filed
2025 Q3
Last filed
2025 Q4
Quarters held
2
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 268,367 +241,367 +894.0% 9.48% $20.5M $76.54
2025 Q3 INITIATED 27,000 — — 0.62% $2.1M $76.23
% of Fund (quarterly)    IOSP price (monthly, adj. close)

Other funds also holding IOSP

As of 2025 Q4 — sorted by position size

Medina Value Partners, LLC 3Y 6.77% FIRST WILSHIRE SECURITIES MANAGEMENT INC 3Y 7Y 1.94% CM Management, LLC 3Y 1.29% QSV Equity Investors LLC 1.21% Numerai GP LLC 3Y 0.91% Round Hill Asset Management 3Y 7Y 0.58% GENDELL JEFFREY L 3Y 7Y 0.38% EntryPoint Capital, LLC 0.32% WESTWOOD HOLDINGS GROUP INC 3Y 7Y 0.31% Allspring Global Investments Holdings, LLC 3Y 0.29%
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