Innospec awards HR executive 2,685 stock-linked units

The award’s three scheduled vesting installments are conditional on continued employment and satisfactory performance.

Rhea-AI Filing Summary

Innospec Inc. (IOSP) reported that Hardy Louis Griffin III, SVP, Human Resources, acquired an award of 2,685 shares of phantom stock on October 1, 2026. Each phantom share is the economic equivalent of one share of IOSP common stock. The award vests 25% on February 1, 2027, 25% on October 1, 2027, and 50% on October 1, 2028, subject to his continued employment and satisfactory performance.

Insider Trade Summary

Grant/Award: 2,685 shares

Grant/Award 1 txn

Insider GRIFFIN HARDY LOUIS III

Role SVP, HUMAN RESOURCES

Type	Security	Shares	Price	Value
Grant/Award	Phantom Stock F1, F2	2,685	$0.00	$0.00

Holdings After Transaction: Phantom Stock — 2,685 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 award: 2,685 shares Common stock equivalence: 1 common share per phantom share First vesting installment: 25% +2 more

5 metrics

Phantom stock award 2,685 shares Awarded October 1, 2026

Common stock equivalence 1 common share per phantom share Economic equivalent stated for each phantom share

First vesting installment 25% February 1, 2027, subject to continued employment and satisfactory performance

Second vesting installment 25% October 1, 2027, subject to continued employment and satisfactory performance

Final vesting installment 50% October 1, 2028, subject to continued employment and satisfactory performance

Key Terms

phantom stock, Vesting Date, economic equivalent

3 terms

phantom stock financial

"Each share of phantom stock is the economic equivalent"

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.

Vesting Date financial

"each such date, a "Vesting Date""

economic equivalent financial

"is the economic equivalent of one share of IOSP common stock"

FAQ

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

How many IOSP phantom stock shares did Hardy Louis Griffin III receive?

Hardy Louis Griffin III, SVP, Human Resources, acquired an award of 2,685 shares of phantom stock on October 1, 2026. Each phantom share is the economic equivalent of one share of IOSP common stock.

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

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Available on EDGAR 10/05/2026 - 08:03 PM Accepted by SEC EDGAR 10/05/2026 - 08:02 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^*

GRIFFIN HARDY LOUIS III

(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)
	SVP, HUMAN RESOURCES

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		2,685		(2)	10/01/2028	Common Stock	2,685	$0	2,685	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.

	Hardy L. Griffin	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)