Innospec (IOSP) CFO receives 4,499 RSUs vesting in 2029

Rhea-AI Filing Summary

Cleminson Ian reported acquisition or exercise transactions in this Form 4 filing.

Innospec Inc. reported that Executive Vice President and Chief Financial Officer Ian Cleminson received a grant of 4,499 shares of common stock in the form of restricted stock units. These RSUs were granted on February 23, 2026 and will vest in full on February 23, 2029. After this award, Cleminson directly holds 22,737 shares of Innospec common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Cleminson Ian

Role EVP & CFO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,499	$0.00	--

Holdings After Transaction: Common Stock — 22,737 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cleminson Ian

(Last) (First) (Middle)

8310 SOUTH VALLEY HIGHWAY

SUITE 350

(Street)

ENGLEWOOD CO 80112

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
INNOSPEC INC. [ IOSP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/23/2026		A		4,499(1)	A	$0.00	22,737	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents Restricted Stock Units ("RSUs") granted on February 23, 2026 which vest in full on February 23, 2029.

	Ian Philip Cleminson	02/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Innospec (IOSP) disclose for Ian Cleminson?

Innospec disclosed that EVP & CFO Ian Cleminson received a grant of 4,499 restricted stock units of common stock. The award was made on February 23, 2026 and represents equity-based compensation rather than an open-market share purchase or sale.

How many restricted stock units did the Innospec (IOSP) CFO receive?

The Innospec CFO received 4,499 restricted stock units of common stock. These RSUs were granted at no cash cost per share and are structured to vest in full on February 23, 2029, aligning the executive’s compensation with longer-term company performance.

When do the Innospec (IOSP) restricted stock units granted to the CFO vest?

The 4,499 restricted stock units granted to Innospec’s CFO vest in full on February 23, 2029. Until that vesting date, the RSUs remain subject to the award’s terms, after which they convert into common shares if the applicable conditions are satisfied.

What is Ian Cleminson’s Innospec (IOSP) share ownership after this RSU grant?

Following the grant, Ian Cleminson beneficially owns 22,737 shares of Innospec common stock directly. This total includes the newly awarded 4,499 restricted stock units and reflects his updated ownership position as reported in the insider transaction filing.

Did the Innospec (IOSP) CFO pay cash for the 4,499 RSUs?

No cash consideration was reported for the 4,499 restricted stock units granted to the Innospec CFO. The transaction price per share was listed as 0.0000, indicating the award was part of his compensation package rather than a market purchase of shares.