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                              December 22, 2023

       Mike Morrison
       Chief Financial Officer
       NCS Multistage Holdings, Inc.
       19350 State Highway 249
       Suite 600
       Houston, TX 77070

                                                        Re: NCS Multistage 
Holdings, Inc.
                                                            Form 10-K for the 
Fiscal Year ended December 31, 2022
                                                            Supplemental 
response filed December 15, 2023
                                                            File No. 001-38071

       Dear Mike Morrison:

              We have reviewed your December 15, 2023 response to our comment 
letter 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. Unless
       we note otherwise, any references to prior comments are to comments in 
our December 1, 2023
       letter.

       Form 10-K for the Fiscal Year ended December 31, 2022

       Management's Discussion and Analysis
       Results of Operations, page 41

   1.                                                   We understand from your 
response to prior comment one that you regard the change in
                                                        revenue for 2022 
compared to 2021 that is attributable to differences in prices received in
                                                        exchange for products 
and services during 2022 compared to 2021 as not material, and
                                                        that you would prefer 
to not disclose the volumes of products and services sold in each
                                                        period, due to 
complexity in establishing correlation with revenues, citing the "number of
                                                        product lines and 
variables in the product and geographic mix."

                                                        With regard to your 
view on materiality, you state that "...price was not a material factor
                                                        impacting the increase 
in revenues for NCS during Fiscal 2022, nor did changes in price
 Mike Morrison
FirstName LastNameMike    Morrison
NCS Multistage  Holdings, Inc.
Comapany22,
December  NameNCS
              2023 Multistage Holdings, Inc.
December
Page 2    22, 2023 Page 2
FirstName LastName
         represent a material offset to the volume driven increase in revenue," 
although certain
         disclosures indicate you had reduced prices, and your explanation 
regarding a time lag in
         realizing the effects of price changes states that 2022 "...was more 
impacted by the price
         declines for Fiscal 2021" than price increases that would follow more 
recent decisions,
         where the effects would be more prevalent in subsequent periods.

         Please submit the computations that you performed in formulating your 
present
         disclosures attributing the increase in revenues to increased volumes, 
and concluding that
         price differences during 2022 compared to 2021 did not have a material 
effect on
         revenues. Please describe your methodology and the inputs sufficiently 
to understand
         how you have managed the complexity mentioned in your response in 
establishing
         support for your disclosures and your views on materiality.
2.       We note that you provide a discussion and analysis of cost of sales 
including
         its percentage of total revenues, and the subcategories of cost of 
product sales and cost of
         services and their percentages of the corresponding revenues, as well 
as comparative
         percentages for the prior year.

         However, your various references to the cost measures utilized in the 
underlying
         computations do not use the line item captions that clarify you have 
excluded depreciation
         and amortization that would be attributable to the various cost 
measures under GAAP, as
         appear in your financial presentation on page 52.

         Please revise your disclosures to clarify that you are discussing 
incomplete cost measures,
         due to the exclusion of depreciation and amortization, and to provide 
equally prominent
         disclosure of the comparable percentage metrics based on the complete 
GAAP measures.
         We suggest using a tabulation to facilitate these comparisons.
How We Evaluate our Results of Operations, page 42

3.       We note that you identify revenues and four non-GAAP measures used by 
your
         management, including Adjusted EBITDA, a variation of Adjusted EBITDA, 
Free Cash
         Flow, and a variation of Free Cash Flow, as "significant factors in 
assessing [y]our results
         of operations and profitability."

         You also state that Adjusted EBITDA and Adjusted EBITDA Less 
Share-Based
         Compensation "...are key metrics that management uses to assess the 
period-to-period
         performance of our core business operations" and that your measure of 
Free Cash Flow is
         used "to evaluate the cash generated by our operations and results of 
operations."

         However, given that you have not mentioned any of these non-GAAP 
measures in
         your discussion and analysis, it appears that you should revise your 
disclosures to clarify
         the role and utility of these measures and to explain how they have 
enhanced or increased
         your understanding of the results of operations and profitability, 
relative to the most
         directly comparable GAAP measures that are identified in your 
reconciliations.
 Mike Morrison
FirstName LastNameMike    Morrison
NCS Multistage  Holdings, Inc.
Comapany22,
December  NameNCS
              2023 Multistage Holdings, Inc.
December
Page 3    22, 2023 Page 3
FirstName LastName

         Please also clarify the extent to which the disclosures you are 
providing under this
         heading are substantively complete in identifying the significant 
factors and key metrics
         that are used by management to assess and evaluate performance; and if 
other measures
         are also important these should be identified to provide adequate 
context.
4.       On a related point, tell us why you identify gross profit in the 
financial reviews provided
         in your quarterly and annual earnings releases, and in various 
investor presentations
         posted on your website, but do not identify this as a relevant measure 
in the disclosures
         accompanying your periodic financial reports.

         With regard to your presentations of gross profit, given that you 
exclude depreciation and
         amortization from the cost of product sales and the cost of services 
that are net against
         revenues in calculating the measure, it appears that you are 
presenting a non-GAAP
         measure utilizing terminology that is generally associated with a GAAP 
measure.

         If you continue to present this non-GAAP margin measure in earnings 
releases and
         investor presentations, you will need to comply with   244.100 of 
Regulation G, to include
         using a different label for your margin measure, providing disclosure 
that conveys its
         character as a non-GAAP measure, identifying the GAAP measure of gross 
margin as the
         most directly comparable GAAP measure, and providing a reconciliation 
from GAAP
         gross margin to your non-GAAP margin measure for each period.

         Alternatively, you would need to correct your computation of gross 
profit to reflect all
         costs that are attributable to the measure to comply with GAAP. Tell 
us your intentions
         relative to this requirement and submit any revisions that you propose 
in connection with
         future disclosures of your non-GAAP margin measures.
Adjusted EBITDA and Adjusted EBITDA Less Share-Based Compensation, page 43

5.       We note your response to prior comment three explaining that the 
professional service
         costs excluded from your non-GAAP measure are limited to costs of 
legal proceedings
         associated with the assertion of, or defense of intellectual property 
and related matters,
         while also stating that you do not consider such costs to reflect 
"ordinary course operating
         expenses" that are part of your revenue generating activities. You 
further clarify that you
         have not described the excluded amounts as non-recurring, infrequent 
or unusual,
         although you disclose that these are "not reflective of ongoing 
operating performance."

         The guidance in the answer to Question 100.01 of our non-GAAP 
Compliance and
         Disclosure Interpretations (C&DI's), pertains to the exclusion of 
normal, recurring, cash
         operating expenses that are necessary to operate the business, and is 
not limited to costs
         that would be part of your revenue generating activities or 
attributable to cost of sales.

         Given the frequency with which you incur these costs, it appears that 
you have an ongoing
         need to defend your intellectual property rights. You have disclosures 
on pages 8 and 18,
 Mike Morrison
NCS Multistage Holdings, Inc.
December 22, 2023
Page 4
         stating that such rights are "important in enabling us to compete in 
the market to supply
         our customers with our products and services" and clarifying that you 
have "...in the past,
         are presently, and may in the future, become involved in legal 
proceedings to protect and
         enforce our intellectual property rights." Based on these disclosures 
it appears that
         incurring professional fees in order to maintain your intellectual 
property rights would
         be considered necessary to operate your business.

         You indicate in your response that you would consider providing 
additional disclosure in
         future filings "related to the limitations" of your non-GAAP measure, 
and to further
         clarify the nature of the excluded costs. However, we believe more 
certain revisions
         would be necessary to address the concerns in the C&DI referenced 
above, to either
         discontinue the exclusion of such costs in computing the measure or 
possibly to discuss
         and analyze the excluded professional fees along with your disclosure 
of the non-GAAP
         measure, if this would adequately serve to avoid misleading 
inferences, i.e. to clarify the
         utility and necessity of the costs in supporting your ongoing 
operations, and to emphasize
         the limitations of your non-GAAP measure in assessing operating 
performance.

         Please submit the revisions that you propose to address these 
concerns.

       Please contact Mark Wojciechowski at 202-551-3759 or Karl Hiller at 
202-551-3686 if
you have questions regarding comments on the financial statements and related 
matters.



FirstName LastNameMike Morrison                                Sincerely,
Comapany NameNCS Multistage Holdings, Inc.
                                                               Division of 
Corporation Finance
December 22, 2023 Page 4                                       Office of Energy 
& Transportation
FirstName LastName