Innospec CFO receives 4,792 share-equivalent units

The award's vesting is conditional on continued employment and satisfactory performance, with the final 50% scheduled for October 1, 2028.

Rhea-AI Filing Summary

Innospec Inc. (IOSP) reports that EVP & CFO Ian Cleminson received an award of 4,792 phantom stock units on October 1, 2026; the reported resulting phantom-stock position was 4,792 units. Each unit is the economic equivalent of one IOSP common share. The award vests subject to continued employment and satisfactory performance: 25% on February 1, 2027, 25% on October 1, 2027, and 50% on October 1, 2028.

Insider Trade Summary

Grant/Award: 4,792 shares

Grant/Award 1 txn

Insider Cleminson Ian

Role EVP & CFO

Type	Security	Shares	Price	Value
Grant/Award	Phantom Stock F1, F2	4,792	$0.00	$0.00

Holdings After Transaction: Phantom Stock — 4,792 contracts (Direct)

Footnotes (2)

1. F1. Each share of phantom stock is the economic equivalent of one share of IOSP common stock.
2. F2. Award will vest according to the following schedule (each such date, a "Vesting Date"), subject to reporting persons continued employment and satisfactory performance: 25% on February 1, 2027; 25% on October 1, 2027; and 50% on October 1, 2028.

Key Figures

Phantom stock units awarded: 4,792 units Common stock equivalent: 1 common share per phantom stock unit First scheduled vesting portion: 25% +3 more

6 metrics

Phantom stock units awarded 4,792 units Award to EVP & CFO Ian Cleminson on October 1, 2026

Common stock equivalent 1 common share per phantom stock unit Each phantom stock unit's economic equivalent

First scheduled vesting portion 25% February 1, 2027

Second scheduled vesting portion 25% October 1, 2027

Final scheduled vesting portion 50% October 1, 2028

Expiration date October 1, 2028 Phantom stock derivative

Key Terms

Phantom Stock, vest, Vesting Date

3 terms

Phantom Stock financial

"Each share of phantom stock is the economic equivalent of one share of IOSP common stock."

A phantom stock is a form of compensation that gives employees or executives the benefits of stock ownership, such as the increase in stock value, without actually giving them real shares. It acts like a promise to pay the employee the equivalent value of company stock later, often as a bonus or incentive. This allows companies to motivate and reward staff without diluting ownership or transferring actual shares.

vest financial

"Award will vest according to the following schedule"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Vesting Date financial

"each such date, a "Vesting Date""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many phantom stock units did IOSP's EVP & CFO receive?

EVP & CFO Ian Cleminson received an award of 4,792 phantom stock units on October 1, 2026; the reported resulting position was 4,792 units.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/05/2026 - 07:56 PM Accepted by SEC EDGAR 10/05/2026 - 07:55 PM Learn about SEC filing dates

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 COLORADO 80112

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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

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

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

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

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
Phantom Stock	(1)	10/01/2026		A		4,792		(2)	10/01/2028	Common Stock	4,792	$0	4,792	D

Explanation of Responses:

1. Each share of phantom stock is the economic equivalent of one share of IOSP common stock.

2. Award will vest according to the following schedule (each such date, a "Vesting Date"), subject to reporting persons continued employment and satisfactory performance: 25% on February 1, 2027; 25% on October 1, 2027; and 50% on October 1, 2028.

	Ian Cleminson	10/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)