# INNOSPEC INC (IOSP) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 45768S105
Page URL: https://superinvestorclub.com/stock/IOSP
Last updated: 2026-08-29T13:47:19.360Z

## Summary

As of the most recent 13F filing period, INNOSPEC INC (IOSP) is held by 0 tracked superinvestors with an aggregate position value of $0 representing 0 shares.

## Top institutional holders (0)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|

## Ownership history (quarter-over-quarter)

- 2026-03-31: 1 holders, $434,469 aggregate, 05950 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "INNOSPEC INC (IOSP) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/IOSP), aggregating SEC 13F, Form 4, and congressional disclosures."