Milton C. Blackmore - 20 Feb 2026 Form 4 Insider Report for INNOSPEC INC. (IOSP)

Role
Director
Signature
Milton C. Blackmore
Issuer symbol
IOSP
Transactions as of
20 Feb 2026
Net transactions value
-$38,791
Form type
4
Filing time
24 Feb 2026, 18:29:24 UTC
Previous filing
27 Feb 2025
Next filing
06 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Blackmore Milton C Director 8310 SOUTH VALLEY HIGHWAY, SUITE 350, ENGLEWOOD Milton C. Blackmore 24 Feb 2026 0001493440

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IOSP Common Stock Options Exercise $45,505 +1,030 +11% $44.18 10,615 20 Feb 2026 Direct
transaction IOSP Common Stock Sale $84,296 -1,030 -9.7% $81.84 9,585 20 Feb 2026 Direct
transaction IOSP Common Stock Award $0 +1,539 +16% $0.000000 11,124 23 Feb 2026 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction IOSP Stock Option Options Exercise $0 -1,030 -100% $0.000000 0 20 Feb 2026 Common Stock 1,030 $44.18 Direct
* 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.