# EDGAR Filing Document

**Accession Number:** 0001054905
**File Stem:** 0001387131-23-003878
**Filing Date:** 2023-3
**Character Count:** 6954
**Document Hash:** dc819bb535b15484b5e735c8fc79b28c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001387131-23-003878.hdr.sgml**: 20230322

**ACCESSION NUMBER**: 0001387131-23-003878

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 8

**FILED AS OF DATE**: 20230322

**DATE AS OF CHANGE**: 20230322

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INNOSPEC INC.
- **CENTRAL INDEX KEY:** 0001054905
- **STANDARD INDUSTRIAL CLASSIFICATION:** CHEMICALS & ALLIED PRODUCTS [2800]
- **IRS NUMBER:** 981081725
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13879
- **FILM NUMBER:** 23753264

**BUSINESS ADDRESS:**
- **STREET 1:** 8310 SOUTH VALLEY HIGHWAY
- **STREET 2:** SUITE 350
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112
- **BUSINESS PHONE:** 7203556451

**MAIL ADDRESS:**
- **STREET 1:** 8310 SOUTH VALLEY HIGHWAY
- **STREET 2:** SUITE 350
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** OCTEL CORP
- **DATE OF NAME CHANGE:** 19980209

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

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|:---|:---|:---|:---|
| ☐ | Preliminary Proxy Statement | ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ | Definitive Proxy Statement |  |  |
| ☒ | Definitive Additional Materials |  |  |
| ☐ | Soliciting Material Pursuant to §240.14a-12 |  |  |

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INNOSPEC INC.

(Name of Registrant as Specified In Its Charter)

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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|:---|:---|
| ![](innospecdefa14a001.jpg) | ![](innospecdefa14a001a.jpg) |

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|:---|:---|
|  | **Online** |
|  | Go to **www.envisionreports.com/iosp** or scan<br> the QR code – login details are located in the<br> shaded bar below. |
| ![](innospecdefa14a002.jpg) | **Votes submitted electronically must be**<br> **received by 11:59pm, Eastern Time, on**<br> **May 3, 2023.** |

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| **Innospec Inc. Stockholder Meeting Notice** | ![](innospecdefa14a003.jpg) |

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**Important Notice Regarding the Availability of Proxy Materials for Innospec Inc. Stockholder Meeting to be Held on May 4, 2023**

Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual stockholders' meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important!

**This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement, proxy card, Annual Report on Form 10-K to stockholders are available at:**

**www.envisionreports.com/iosp**

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| | | |
|:---|:---|:---|
|  | **Easy Online Access – View your proxy materials and vote.** | **Easy Online Access – View your proxy materials and vote.** |
| ![](innospecdefa14a004.jpg) |  |  |
| ![](innospecdefa14a004.jpg) | **Step 1:** | Go to **www.envisionreports.com/iosp** |
| ![](innospecdefa14a004.jpg) | **Step 2:** | Click on **Cast Your Vote or Request Materials.** |
| ![](innospecdefa14a004.jpg) | **Step 3:** | Follow the instructions on the screen to log in. |
| ![](innospecdefa14a004.jpg) | **Step 4:** | Make your selections as instructed on each screen for your delivery preferences. |
| ![](innospecdefa14a004.jpg) | **Step 5:** | Vote your shares. |

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**When you go online, you can also help the environment by consenting to receive electronic delivery of future materials.**

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|:---|:---|
| ![](innospecdefa14a005.jpg) | **Obtaining a Copy of the Proxy Materials - If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before April 24, 2023 to facilitate timely delivery.** |

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| ![](innospecdefa14a006.jpg) | 2 N O T | ![](innospecdefa14a001a.jpg) |

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03R5XA

**Innospec Inc. Stockholder Meeting Notice**

**Innospec Inc.'s Annual Meeting of Stockholders will be held on Thursday, May 4, 2023 at 10:00am Eastern Time at The Ritz-Carlton, Charlotte, 201 East Trade Street, Charlotte, NC 28202.**

**Proposals to be voted on at the meeting are listed below along with the Board of Directors' recommendations.**

**The Board of Directors recommend a vote <u>FOR</u> all the nominees listed and <u>FOR</u> Proposals 3 and 4 and <u>1 YEAR</u> on Proposal 2:**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. Election
 of two Class I Directors:

01 - Claudia P. Poccia

02 - Elizabeth K. Arnold

&nbsp;&nbsp;&nbsp;&nbsp;2. Frequency
 of Say on Pay – An advisory vote on the frequency of the advisory vote on executive
 compensation

&nbsp;&nbsp;&nbsp;&nbsp;3. Say
 on Pay – An advisory vote on the approval of executive compensation

&nbsp;&nbsp;&nbsp;&nbsp;4. Ratification
 of the appointment of Innospec Inc.'s independent registered accounting firm

**PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you.**

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| ![](innospecdefa14a005.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Here's how to order a copy of the proxy materials and select delivery preferences:**<br>Current and future delivery requests can be submitted using the options below.<br>If you request an email copy, you will receive an email with a link to the current meeting materials.<br>**PLEASE NOTE:** You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials.<br>– **Internet** - Go to **www.envisionreports.com/iosp**. Click Cast Your Vote or Request Materials.<br>– **Phone** - Call us free of charge at 1-866-641-4276.<br>– **Email** - Send an email to investorvote@computershare.com with "Proxy Materials Innospec Inc." in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials.<br>To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by April 24, 2023. |

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