Innospec (IOSP) director amends Form 4 after selling 594 common shares

Rhea-AI Filing Summary

Innospec Inc. director Larry Padfield reported amended insider sales of company common stock. The Form 4/A corrects transaction prices previously reported. On February 27, 2026, he sold 287 shares at $76.30 and 307 shares at $76.79 in open-market transactions, totaling 594 shares.

The footnotes explain that each reported price is a weighted average. The 287-share sale occurred in multiple trades between $75.5001 and $76.55, and the 307-share sale in trades between $76.555 and $77.0713. After these transactions, his directly held ownership was reported as 9,453 shares of Innospec common stock.

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

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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^*

PADFIELD Larry

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)
03/03/2026

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

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

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	02/27/2026		S		287	D	$76.3(1)	9,760	D
Common Stock	02/27/2026		S		307	D	$76.79(2)	9,453	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. This Form 4/A amends the Form 4 filed on March 3, 2026 to correct the transaction price reported in Table I. The price reported reflects the weighted average sale price. The shares were sold in multiple transactions at prices ranging from $75.5001 to $76.55. The reporting person undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

2. This Form 4/A amends the Form 4 filed on March 3, 2026 to correct the transaction price reported in Table I. The price reported reflects the weighted average sale price. The shares were sold in multiple transactions at prices ranging from $76.555 to $77.0713. The reporting person undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

	Larry Padfield	03/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did Innospec (IOSP) director Larry Padfield report?

Innospec director Larry Padfield reported amended open-market sales of company common stock. On February 27, 2026, he sold 287 shares at $76.30 and 307 shares at $76.79, reflecting weighted average sale prices across multiple trades within specified price ranges.

How many Innospec (IOSP) shares did Larry Padfield sell in this Form 4/A?

Larry Padfield sold a total of 594 Innospec common shares in this amended filing. The sales consisted of 287 shares at a weighted average price of $76.30 and 307 shares at a weighted average price of $76.79, both executed in open-market transactions.

What prices were reported for Larry Padfield’s Innospec (IOSP) stock sales?

The amended filing reports weighted average prices of $76.30 for 287 shares and $76.79 for 307 shares. Footnotes state the 287-share trades ranged from $75.5001 to $76.55, while the 307-share trades ranged from $76.555 to $77.0713 across multiple executions.

Why was this Innospec (IOSP) Form 4/A filed as an amendment?

This Form 4/A was filed to correct the transaction prices previously reported in Table I. It clarifies that the disclosed prices are weighted average sale prices for multiple trades and provides the exact price ranges within which the individual transactions occurred for each reported sale.

How many Innospec (IOSP) shares does Larry Padfield hold after these sales?

After the reported sales, Larry Padfield’s direct ownership was disclosed as 9,453 Innospec common shares. This figure reflects his holdings following the two open-market sale transactions totaling 594 shares executed on February 27, 2026, as shown in the amended filing.

Were Larry Padfield’s Innospec (IOSP) stock sales single trades or multiple transactions?

Both reported sales were executed as multiple transactions. The 287-share sale occurred in trades between $75.5001 and $76.55, and the 307-share sale in trades between $76.555 and $77.0713, with the Form 4/A reporting weighted average prices for each group.