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                              April 23, 2024

       Mary Dean Hall
       Executive Vice President and Chief Financial Officer
       Ingevity Corp
       4920 O'Hear Avenue Suite 400
       North Charleston, SC 29405

                                                        Re: Ingevity Corp
                                                            Form 10-K for the 
Fiscal Year Ended December 31, 2023
                                                            File No. 001-37586

       Dear Mary Dean Hall:

              We have limited our review of your filing to the financial 
statements and related
       disclosures and have the following comments.

              Please respond to this letter within ten business days by 
providing the requested
       information or advise us as soon as possible when you will respond. If 
you do not believe a
       comment applies to your facts and circumstances, please tell us why in 
your response.

                                                        After reviewing your 
response to this letter, we may have additional comments.

       Form 10-K for the Fiscal Year Ended December 31, 2023

       Item 7. Management's Discussion and Analysis of Financial Condition and 
Results of Operations
       Recent Developments
       Restructuring Charges, Performance Chemicals Repositioning, page 28

   1.                                                   Revise future filings 
to include a discussion about the expected effects on future earnings
                                                        and cash flows 
resulting from the repositioning plan (for example, reduced depreciation,
                                                        reduced employee 
expense, etc.). The effect on future periods should be quantified and
                                                        disclosed, along with 
the initial period in which those effects are expected to be realized.
                                                        This includes whether 
the cost savings are expected to be offset by anticipated increases in
                                                        other expenses or 
reduced revenues. This discussion should clearly identify the income
                                                        statement line items to 
be impacted (for example, cost of sales; marketing; selling, general
                                                        and administrative 
expenses; etc.). In addition, in future periods, if actual savings
                                                        anticipated by the exit 
plan are not achieved as expected or are achieved in periods other
                                                        than as expected, MD&A 
should discuss that outcome, its reasons, and its likely effects on
                                                        future operating 
results and liquidity. Reference SAB Topic 5P4.
 Mary Dean Hall
FirstName   LastNameMary Dean Hall
Ingevity Corp
Comapany
April       NameIngevity Corp
       23, 2024
April 223, 2024 Page 2
Page
FirstName LastName
Performance Chemicals Reporting Unit, page 29

2.       Reference your disclosure on page that you performed impairment tests 
of goodwill
         related to the Performance Chemicals reporting unit because continued 
reduction in
         demand in industrial end markets had negatively impacted your ability 
to offset elevated
         CTO costs through pricing actions. In future filings, revise to 
provide information for
         investors to assess the probability of future goodwill impairment 
charges. For example,
         for each reporting unit at risk of failing an impairment test, 
disclose the following:
             the percentage by which fair value exceeded carrying value at the 
date of the most
              recent test;
             a detailed description of the methods and key assumptions used and 
how the key
              assumptions were determined;
             a discussion of the degree of uncertainty associated with the 
assumptions; and
             a description of potential events and/or changes in circumstances 
that could
              reasonably be expected to negatively affect the key assumptions.
         Refer to Item 303(b)(3) of Regulation S-K.
3.       As a related matter, we also note that in your earnings release you 
refer to Road
         Technologies business line and Industrial Specialties business line as 
components of your
         Performance Chemicals segment. Please provide us an analysis how you 
have determined
         that they do not represent separate reporting units under ASC350-20 as 
you stated on page
         42 that your reporting units are your operating segments.
Reconciliation of Net Income to Adjusted EBITDA, page 37

4.       Please tell us how you determined that the non-GAAP adjustment for 
"Loss on CTO
         resales" meets the requirements of Question 100.01 of the C&DI on 
Non-GAAP Financial
         Measures. Reference ASC 420-10-S99-3 which states,       the staff 
believes that decisions
         about the timing, method, and pricing of dispositions of inventory 
generally are
         considered to be normal, recurring activities integral to the 
management of the ongoing
         business."
5.       We note that the non-GAAP adjustment for Restructuring and other 
(income) charges, net
         includes $19.7 million of inventory charges that were recorded within 
cost of sales. With
         reference to ASC 420-10-S99-3, please tell us your consideration of 
the guidance in
         Question 100.01 the Compliance and Disclosure Interpretations for 
Non-GAAP Financial
         Measures for this portion of the adjustment.
Consolidated Financial Statements
Note 2. Summary of Significant Accounting Policies, Non-operating income and 
expense, page
61

6.       Please explain to us the basis for your accounting for gains and 
losses associated with
         crude tall oil ("CTO") resales by addressing the following items in 
your response:
             Explain to us in detail the composition of the "net gains or 
losses associated with the
 Mary Dean Hall
Ingevity Corp
April 23, 2024
Page 3
              CTO resale activities" that is recorded during FY23;
                Discuss to whom you sell the CTO inventory, how it is different 
from your normal
              CTO sales, and why you believe it is outside of your ordinary 
course of business;
                Tell us why it is appropriate to record those amounts within 
other income and
              expense when dispositions of inventory appear to be normal, 
recurring activities
              integral to the management of the ongoing business as referenced 
in ASC 420-10-
              S99-3;
                Discuss how you determine the amount of excess CTO volume each 
period;
                Tell us how you account for the CTO resales within the 
Statement of Cash Flows.
7.       As a related matter, tell us in detail of your supply agreement for 
the CTO, including but
         not limited to any firm purchase commitments. And if so, please tell 
us how you have
         considered guidance under firm purchase commitments for inventory 
subject to ASC 330-
         10, which may require a reporting entity to recognize a loss based on 
an anticipated
         impairment of the inventory upon acquisition. In that regard, we note 
you disclosed that
         reselling excess volumes in the open market may result in $30.0 
million to $80.0 million
         of incremental losses in 2024.

       In closing, we remind you that the company and its management are 
responsible for the
accuracy and adequacy of their disclosures, notwithstanding any review, 
comments, action or
absence of action by the staff.

       Please contact Kristin Lochhead at 202-551-3664 or Li Xiao at 
202-551-4391 with any
questions.



                                                              Sincerely,
FirstName LastNameMary Dean Hall
                                                              Division of 
Corporation Finance
Comapany NameIngevity Corp
                                                              Office of 
Industrial Applications and
April 23, 2024 Page 3                                         Services
FirstName LastName