Elizabeth K. Arnold - 23 Feb 2026 Form 4 Insider Report for INNOSPEC INC. (IOSP)

Role
Director
Signature
Elizabeth K Arnold
Issuer symbol
IOSP
Transactions as of
23 Feb 2026
Net transactions value
$0
Form type
4
Filing time
25 Feb 2026, 17:26:13 UTC
Previous filing
15 May 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Arnold Elizabeth K Director 8310 SOUTH VALLEY HIGHWAY, SUITE 350, ENGLEWOOD Elizabeth K Arnold 25 Feb 2026 0001785365

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IOSP Common Stock Award $0 +1,539 +32% $0.000000 6,376 23 Feb 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents Restricted Stock Units ("RSUs") vesting in full on February 23, 2029, granted by Issuer in connection with Reporting Person's service as a non-employee director.