Ingevity : 2025 Ingevity Proxy Statement – Notice of Annual Meeting of Shareholders

NGVT

MESSAGE TO OUR

STOCKHOLDERS

Luis Fernandez-Moreno | March 20, 2025

Dear Fellow Ingevity Stockholders,

It is my pleasure to invite you to the 2025 annual meeting of stockholders (the "Annual Meeting") of Ingevity Corporation ("Ingevity," the "Company" or "us") on behalf of Ingevity's Board of Directors (the "Board"). The Annual Meeting will be held virtually via live audio webcast on April 30, 2025, at 9:30 a.m. Eastern Time.

Bold actions are underway across the Company - to our leadership, portfolio, operating priorities, and cost structure - to drive profitable growth and significant, sustainable value creation for all Ingevity stockholders. These actions are delivering results, and we believe our momentum is just beginning.

New leadership, new priorities and a team focused on execution

To accelerate improved performance and best position the Company for the future, in October 2024, our Board of Directors initiated a search for a new chief executive officer, and in March 2025, announced the appointment of accomplished specialty materials leader, David H. Li, as Ingevity's next president and CEO. We are confident that Mr. Li will further strengthen performance and best position the Company for the future and are excited to welcome him to Ingevity soon. We bolstered Ingevity's executive team with the addition of experienced manufacturing and chemical industry leaders: Michael N. Shukov as senior vice president and president, Advanced Polymer Technologies in 2025, and in 2024, Terry Dyer as Senior Vice President and Chief Human Resources Officer, and Ryan Fisher as Senior Vice President, General Counsel and Corporate Secretary.

Working alongside the Board and Ingevity team, we launched new strategic priorities last fall - execution excellence, reducing leverage, and portfolio optimization. I am proud of our employees' focus and execution in each of these areas.

On a consolidated basis, we delivered adjusted EBITDA* for fiscal 2024 of $363 million, exceeding analyst estimates, and improved EBITDA Margins* by 350 basis points to 25.8%. We realized a total of $84 million in cost savings in 2024 and generated $51 million of free cash flow* despite $200 million of cash outflows related to our repositioning actions. This enabled us to reduce debt and lower our leverage ratio in the second half of the year. Segment performance is also improving.

Record year for Performance Materials

In 2024, we delivered record performance in our Performance Materials segment for both sales and EBITDA. The fourth quarter of 2024 marked the sixth consecutive quarter of EBITDA margins surpassing 50%, driven by pricing and operational efficiency initiatives. We expect continued positive results in this business as ICE vehicles increasingly become more fuel-efficient and consumer preferences further trend toward hybrids. We are also making progress in developing new markets for our carbon technologies in silicon anode batteries through our investment in Nexeon.

Transforming Performance Chemicals

The increased EBITDA margins we reported for the Performance Chemicals segment in the second half of 2024 demonstrate our work to proactively manage this business by exiting lower margin cyclical end markets, reducing our physical footprint to optimize costs and diversifying our raw material stream. In addition, we addressed uneconomic long-term contracts, which previously hindered our ability to manage the cost and timing of key raw material purchases.

*Reconciliation of these non-GAAP financial measures to the nearest GAAP measure can be found in Appendix A.

INGEVITY | 2025 Proxy Statement

1

Message To Our Stockholders

Advanced Polymer Technologies demonstrating resiliency

We achieved increased sales volumes in 2024 for the Advanced Polymers Technologies segment even in challenging market conditions. Although demand is expected to remain flat in the near term, we believe long-term this segment will generate 20% or better margins, driven by greater industrial demand in existing markets supported by more innovation in high-growth areas such as bioplastics used in food packaging and apparel.

Reshaping portfolio to focus on higher growth, higher margin opportunities

On October 30, 2024, we publicly announced that we were reviewing our business portfolio, a review which began in March 2024, and which has been one of my top priorities since assuming the interim CEO role.

As part of this review, we announced on January 16, 2025, our decision to explore strategic alternatives for a majority of our Performance Chemicals Industrial Specialties product lines and our North Charleston, South Carolina, crude tall oil refinery. Exiting most of the Industrial Specialties product line is expected to strengthen the Performance Chemicals segment further and enable us to focus our attention on higher growth and higher margin opportunities within our portfolio while increasing the Company's earnings and cash flow.

We are proceeding expeditiously with the review of Industrial Specialties and the refinery and expect to communicate a path forward by year end. We are also continuing to review the rest of our portfolio.

Continuing to enhance the Ingevity board with fresh, qualified perspectives

Over the last three years, Ingevity has added three new independent directors to the Company's nine-member Board, including J. Kevin Willis, senior vice president and chief financial officer of Ashland Inc. in December 2024. Kevin's appointment follows a search that began in June 2024 with the assistance of an independent search firm. Kevin played an integral role in Ashland's successful separation from Valvoline and the reorganization of Ashland's European operations and brings highly relevant experience in the chemical industry. He also brings extensive financial planning, capital allocation analysis, and business development experience, which make him well suited to help oversee and guide the management team on the Company's new strategic priorities and the improvement initiatives we are pursuing.

Thank you for your investment

I am immensely proud of the progress we are making to transform Ingevity for the future. On behalf of the Board, I extend a warm welcome to our incoming CEO, David Li, and look forward to working alongside him to facilitate a smooth transition and execute appropriate actions to ensure our business portfolio and cost structure are aligned with our objectives of being a specialty chemicals leader, driving profitable growth and creating value for our stockholders.

Thank you for your continued investment in Ingevity. Our premier activated carbon platform, leading specialty chemicals business, global footprint and innovative employees provide a strong foundation for success. We are bullish about the future and confident in our ability to strengthen our position as a world class specialty chemicals leader. We hope you share our enthusiasm for Ingevity and the exciting opportunities ahead.

Best regards,

Luis Fernandez-Moreno

Interim President and CEO

2

INGEVITY | 2025 Proxy Statement

Message To Our Stockholders

Additional information about this year's Annual Meeting

The accompanying notice of Annual Meeting and proxy statement are being mailed to each holder of record of the Company's common stock (the "Common Stock") as of the record date, March 3, 2025. Please see "Questions and Answers about the Annual Meeting, Proxy Solicitation and Voting Information" for additional information about how to attend, vote, examine the list of stockholders and submit questions during the Annual Meeting. You can participate in the Annual Meeting, submit questions and vote your shares of the Common Stock during the Annual Meeting by visiting www.cesonlineservices.com/ngvt25_vm. To participate in the Annual Meeting, you should register at www.cesonlineservices.com/ngvt25_vm by 11:59 PM (Eastern Time) on April 28, 2025. Further details regarding participation, voting and the business to be conducted at the Annual Meeting appear in the accompanying notice of the Annual Meeting and proxy statement.

Your vote will be especially important at this year's Annual Meeting. Vision One Fund, LP ("VOF") on behalf of itself and Vision One Management Partners, LP ("VOMP", collectively with VOF, its affiliates and other persons identified in proxy solicitation materials filed on their behalf "Vision One") has notified the company that it has nominated Julio C. Acero and F. David Segal for election as directors at the Annual Meeting in opposition to the nominees recommended by the Board. You may receive solicitation materials from Vision One, including proxy statements and gold proxy cards. Ingevity is not responsible for the accuracy or completeness of any information provided by or on behalf of Vision One or its nominees or any other statements Vision One may make.

The Board unanimously does NOT endorse any of the nominees for director submitted by Vision One and unanimously recommends that you vote "FOR" each of the nine highly qualified nominees proposed by the Board on the enclosed WHITEproxy card or WHITEvoting instruction form: Jean S. Blackwell, Luis Fernandez-Moreno, Diane H. Gulyas, Bruce D. Hoechner, Frederick J. Lynch, Karen G. Narwold, Daniel F. Sansone, J. Kevin Willis, and Benjamin G. (Shon) Wright. We strongly urge you to discard and NOT to vote using any gold proxy card sent to you by Vision One. If you have already submitted a gold proxy card sent to you by, or on behalf of, Vision One, you can revoke such proxy and vote for the Board's nine nominees and on the other matters to be voted on at the Annual Meeting by marking, signing and dating the enclosed WHITEproxy card or WHITEvoting instruction form and returning it in the enclosed postage-paid envelope or by using the information on the WHITEproxy card or WHITEvoting instruction form to vote via the Internet or telephone by otherwise following the instructions on your WHITEproxy card, or WHITEvoting instruction form. Only your latest validly executed proxy will count, and any proxy may be revoked at any time prior to its exercise at the Annual Meeting as described in the accompanying proxy statement.

Please note that this year, your proxy card looks different. It has more names on it than there are seats up for election, under recent requirements called a "universal proxy card." This means the Company's proxy card is required to list the Vision One nominees in addition to the Board's nominees. Please mark your card carefully and only vote "FOR" the nine nominees and all other proposals recommended by the Board.

Whether or not you plan to attend the Annual Meeting virtually, we urge you to vote and submit your proxy in advance of the Annual Meeting by one of the methods described in the proxy materials using the WHITEproxy card or WHITEinstruction form or notice. Your vote will mean that you are represented at the Annual Meeting even if you do not attend virtually.

If you have any questions or require any assistance with voting your shares, please call Ingevity's proxy solicitor:

Innisfree M&A Incorporated

501 Madison Avenue, 20th floor

New York, New York 10022

Shareholders may call toll free: (877) 687-1874

Banks and Brokers may call collect: (212) 750-5833

INGEVITY | 2025 Proxy Statement

3

NOTICE

of 2025 Annual Meeting of Stockholders of Ingevity Corporation

How to vote:

Online

Vote online using the control number on your WHITE proxy card at the voting website indicated.

By phone

Locate the control number on your WHITE proxy card to vote by calling the toll-free number indicated.

DATE

& TIME

April 30, 2025

9:30 a.m.

Eastern Time

LIVE AUDIO WEBCAST

RECORD

LOCATION

DATE

www.cesonlineservices.com/ngvt25_vm

March 3, 2025

See "Questions and Answers about the

Holders of record of our

Annual Meeting, Proxy Solicitation, and

Common Stock at the close of

Voting Information" for details on how to

business on the Record Date are

pre-register and participate at the meeting

entitled to receive notice of,

virtually attend, and vote

at the Annual Meeting

By mail

Mark, date and sign your WHITE proxy card and return it in the enclosed postage pre-paid envelope

During the virtual meeting

See "Questions and Answers about the Annual Meeting, Proxy Solicitation, and Voting Information" for details on how to virtually attend and vote during the meeting

YOUR VOTE IS VERY IMPORTANT!

If you have any questions about the Annual Meeting or how to vote your shares, please contact the firm assisting us with the solicitation of proxies:

INNISFREE M&A INCORPORATED:

To allow our stockholders greater access to the meeting and lower the barriers to stockholder participation, our Annual Meeting will be held in a virtual format only with no physical meeting location.

Items of business

At the Annual Meeting, stockholders will be asked to act on the following items:

Additional information

Please note that Vision One has provided notice of its nomination of two nominees for election to the Company's Board at the Annual Meeting in opposition to the nominees recommended by our Board. Pursuant to SEC rules, we are required to reflect the Vision One nominees on our WHITEproxy card; however, our Board does not endorse the Vision One nominees and urges you to use the WHITEproxy card or WHITEvoting instruction form to vote FOR only the nine (9) nominees recommended by the Board. You cannot vote FOR more than nine nominees at the Annual Meeting. You are permitted to vote FOR fewer than nine nominees. If you vote FOR less than nine nominees, your shares will only be voted FOR those nominees you have marked. If you vote FOR more than nine nominees, your votes on Proposal 1 regarding nominees will be invalid and will not be counted.

Whether or not you plan to attend the Annual Meeting virtually, we urge you to review the proxy materials carefully and to use your WHITEproxy card to vote in advance as promptly as possible.

By Order of the Board of Directors,

Ryan C. Fisher

Corporate Secretary

4 INGEVITY | 2025 Proxy Statement

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5

Table of Contents

Message from our CEO

1

Restricted Stock Unit awards

43

Other compensation

43

NOTICE

4

Stock ownership guidelines; prohibition on hedging

43

2024 Director compensation table

44

Proxy Statement Summary

8

Proposal 2: Non-Binding Advisory Vote to

2024 Business Overview

9

2024 Achievements

10

Approve The Compensation of Ingevity's

Snapshot of the Board's Director Nominees

11

Named Executive Officers (Say-on-Pay)

45

Board Demographics

11

Compensation Discussion and Analysis

46

Corporate Governance Highlights

12

Executive Compensation Governance Practices

13

Executive Summary

47

Executive Compensation Governance Practices

49

Background to the Solicitation

14

What Guides Our Program

50

How We Set Compensation

51

Proposal 1: Election of Directors

18

2024 Executive Compensation In Detail

53

Vote Required:

19

Other Compensation Policies and Practices

62

Board Nominees for Director

20

Other compensation and benefits

63

Summary of the Board Nominees' Skills and

Risk analysis

67

Experience

29

Tax and accounting considerations

67

Board and Corporate Governance Matters

30

Talent and Compensation Committee Report

68

Role of the Board of Directors

30

Compensation Tables and Other Matters

69

Corporate Governance Guidelines

30

Board Leadership Structure

31

Summary Compensation Table

69

Committees of our Board of Directors

32

Grants of Plan-Based Awards in 2024

71

Director Nominees and Selection

34

Outstanding Equity Awards at 2024 Fiscal Year End

73

Board Refreshment and Succession Planning

34

Option Exercises and Stock Vested During Fiscal 2024

76

Evaluating Board performance and effectiveness

35

Pension Benefits Table - 2024

78

Board meetings and executive sessions

36

Non-Qualified Deferred Compensation at 2024 Fiscal

Board's role in risk oversight

36

Year End

78

Management development and succession planning

39

Potential Payments Upon Certain Termination Events

Board oversight of human capital matters

39

or a Change of Control

79

CEO Pay Ratio-2024

82

Director education program

39

Pay Versus Performance

83

Retirement age, term limits and significant change in

job responsibilities

39

Proposal 3: Ratification of the Appointment of

Overboarding policy

39

Independent Registered Public Accounting Firm

88

Stockholder outreach and engagement

40

How to contact the Board

40

Audit Committee Matters

89

Code of Conduct

40

Governance materials on our website

41

Audit and other fees

89

Related party transactions

41

Pre-approval policy and procedures

89

Director Compensation

42

Audit Committee Report

90

Ingevity's Director compensation approval process 2024 Non-employee Director compensation Cash retainers

42

Proposal 4: Approval of Ingevity Corporation

42

2025 Omnibus Incentive Plan

91

42

6 INGEVITY | 2025 Proxy Statement

Table of Contents

Ownership of Equity Securities

Principal stock owners

Executive Officers and Directors

Delinquent Section 16(a) reports

Questions and Answers About the Annual

Meeting, Proxy Solicitation, and Voting

Information

Questions and Answers Regarding Stockholder

Communications, Stockholder Proposals, and

Company Documents

Forward-Looking Statements

Appendix A: Non-GAAP Financial Measures and Reconciliation Tables

Non-GAAP financial measures used in this proxy statement

Metrics used in "2024 Business Highlights," "Fiscal Year 2024 Compensation Highlights," and "NEO Performance and Compensation Decisions"

Metrics used in "Short-Term Incentive Plan and 2024 Awards"

Metrics used in "Fiscal Year 2024 Compensation Highlights," "Long-Term Incentive Plan and 2024 Awards," and "Payout of 2022 PSU Award" Reconciliation of Net Income (Loss) (GAAP) to Adjusted EBITDA (Non-GAAP) to Company STIP-Adjusted EBITDA (Non-GAAP)

99

Reconciliation of Net Cash Provided by Operating

99

Activities (GAAP) to Free Cash Flow (Non-GAAP)

115

Reconciliation of Segment EBITDA (GAAP) to BU

100

STIP-Adjusted EBITDA (Non-GAAP)

116

100

Reconciliation of Revenue (GAAP) to Company

STIP-Adjusted Revenue (Non-GAAP)

116

Reconciliation of Segment Revenue (GAAP) to BU

101

STIP-Adjusted Revenue (Non-GAAP)

116

Reconciliation of Diluted EPS (GAAP) to Cumulative

EPS (Non-GAAP)

117

Reconciliation of Net Income (Loss) (GAAP) to NOPAT

108

(Non-GAAP)

118

Calculation of Average Invested Capital (Non-GAAP)

118

110

Calculation of Average ROIC (Non-GAAP)

119

Appendix B: Ingevity Corporation 2025

111

Omnibus Incentive Plan

120

Appendix C: Supplemental Information

111

Regarding Participants in the Solicitation

133

Directors and Nominees

133

111

Officers and Employees

133

Information Regarding Ownership of the Company's

112

Securities by Participants

134

Information Regarding Transactions in Ingevity

Securities by Participants - Last Two Years

134

113

Miscellaneous Information Regarding Participants in

the Solicitation

140

115

INGEVITY | 2025 Proxy Statement

7

Proxy Statement Summary

This summary highlights information about Ingevity Corporation and certain information contained elsewhere in this proxy statement (the "Proxy Statement") for our 2025 Annual Meeting of Stockholders (the "Annual Meeting"). This summary does not contain all of the information that you should consider in deciding to vote. Please read the entire Proxy Statement carefully before voting.

Agenda Items and Board Recommendations

Proposal

Proposal 1: Election of Directors

Proposal 2: Advisory vote on compensation of our Named Executive Officers (Say-on-Pay)

Proposal 3: Ratification of the appointment of PricewaterhouseCoopers LLP as the Company's independent registered public accounting firm for 2025

Proposal 4: Approve the Ingevity Corporation 2025 Omnibus Incentive Plan

Board Vote

Page

Recommendation

FOR

18

only each of our Board's

9 director nominees

FOR

45

FOR

88

FOR

91

8 INGEVITY | 2025 Proxy Statement

Disclaimer

Ingevity Corporation published this content on March 24, 2025, and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on March 24, 2025 at 21:21:45.781.