Innospec (IOSP) HR SVP granted 2,521 RSUs vesting in 2029

Rhea-AI Filing Summary

INNOSPEC INC. senior vice president of human resources Hardy Louis Griffin III reported an equity award under the company’s compensation program. On February 23, 2026, he acquired 2,521 shares of common stock in the form of restricted stock units granted at no cash cost, which will vest in full on February 23, 2029. Following this grant, his directly owned common stock holdings total 10,562 shares.

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 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)
	SVP, HUMAN RESOURCES

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		2,521(1)	A	$0.00	10,562	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.

	Hardy L. Griffin	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 IOSP executive Hardy Louis Griffin III report?

Hardy Louis Griffin III reported receiving 2,521 shares of INNOSPEC INC. common stock as a restricted stock unit grant on February 23, 2026. The award was classified as a grant or other acquisition rather than an open-market purchase, with no cash price per share disclosed.

What role does Hardy Louis Griffin III hold at INNOSPEC INC. (IOSP)?

Hardy Louis Griffin III serves as senior vice president of human resources at INNOSPEC INC. This position is identified in the insider report, which ties the equity grant of 2,521 restricted stock units to his executive role within the company’s leadership structure.

How many INNOSPEC INC. shares does Hardy Louis Griffin III own after this Form 4 transaction?

After the reported equity grant, Hardy Louis Griffin III directly owns 10,562 shares of INNOSPEC INC. common stock. This total includes the 2,521 restricted stock units awarded on February 23, 2026, as reflected in the insider ownership figures following the transaction.

What are the vesting terms of the IOSP restricted stock units granted to Hardy Louis Griffin III?

The 2,521 restricted stock units granted to Hardy Louis Griffin III on February 23, 2026, vest in full on February 23, 2029. This means the entire award becomes fully earned on that date, subject to the conditions implied by the vesting schedule described.

Was the IOSP insider transaction a market purchase or a stock award?

The IOSP insider transaction was a stock award, not a market purchase. It is coded as a grant, award, or other acquisition, with 2,521 restricted stock units granted at a reported price of $0.0000 per share, consistent with equity compensation rather than open-market buying.

What security type is involved in Hardy Louis Griffin III’s IOSP Form 4?

The transaction involves INNOSPEC INC. common stock delivered through restricted stock units. The Form 4 describes the security as common stock and a footnote clarifies that the reported amount represents RSUs that vest in full on February 23, 2029, aligning with typical equity incentive awards.