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                              October 29, 2021

       Richard Lindahl
       Chief Financial Officer
       Emergent BioSolutions Inc.
       400 Professional Drive Suite 400
       Gaithersburg, Maryland

                                                        Re: Emergent
BioSolutions Inc.
                                                            Form 10-K for the
Fiscal Year Ended December 31, 2020
                                                            Form 10-Q for the
Fiscal Quarter Ended June 30, 2021
                                                            Response dated
September 30, 2021
                                                            File No. 001-33137

       Dear Mr. Lindahl:

              We have reviewed your September 30, 2021 response to our comment
letter and have the
       following comments. In some of our comments, we may ask you to provide
us with information
       so we may better understand your disclosure.

              Please respond to these comments 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 our
       comments apply to your facts and circumstances, please tell us why in
your response.

             After reviewing your response to these comments, we may have
additional
       comments. Unless we note otherwise, our references to prior comments are
to comments in our
       August 18, 2021 letter.

       Form 10-K for the Fiscal Year Ended December 31, 2020

       Management's Discussion and Analysis of Financial Condition and Results
of Operations Results
       of Operations
       Contract Development and Manufacturing Services, page 58

   1.                                                   Refer to your response
to comment 6 and the proposed disclosure in response to comment
                                                        4 with respect to the
status of the AZ contract. You state that you are in negotiations with
                                                        AZ to settle your
contract and have not included revenue associated with the performance
                                                        of any future services
for AZ in the unsatisfied performance obligation disclosure. Please
                                                        address the following:
 Richard Lindahl
FirstName LastNameRichard
Emergent BioSolutions Inc. Lindahl
Comapany
October 29,NameEmergent
            2021          BioSolutions Inc.
October
Page 2 29, 2021 Page 2
FirstName LastName
                As previously requested, please clarify in your proposed
disclosure how your results
              of operations have been and are expected to be affected in the
future for the
              renegotiation of the AstraZeneca contract. In this regard, we
note the increase in
              selling, general and administrative expenses in the six months
ended June 30, 2021
              compared to the prior period of $15.2 million and the $12 million
spent to remediate
              and strengthen the manufacturing process at the Bayview site
referred to in your
              earnings call. In addition, it is unclear if there was any lost
revenue and related cost
              of sales relating to the AZ contract.
                Clarify in the filing the nature of the renegotiation, which
appears to be a termination
              of the contract, and the status thereof. Specifically state that
AZ's period of
              performance was from July 2020-September 2020 and you will not be
recording any
              future revenues for the AZ contract.
                Tell us why additional disclosure is not required in the notes
to the financial
              statements.
Gross Profit Margin for Product Sales and CDMO services, page 59

2.       We note your response to our prior comment 2 and your proposed
disclosures. Your
         arguments, including your references to your prior response, focused
on the
         manufacturing of bulk drug substances and drug products. Your recent
revision of your
         revenue recognition policy for the drug substance batch production
indicated a different
         pattern for control transfer under ASC 606. Furthermore, your business
has also evolved
         to include a large portion of suite reservation operation, which
appears to be bearing a
         significantly higher margin. Please tell us how you determined that
disclosure of your
         costs related to the CDMO service was not required by Article 5 of
Regulation S-X which
         requires separate disclosure of cost of tangible goods sold, cost of
services, and expenses
         applicable to rental income if their related revenue is over 10% net
sales and gross
         revenues. In addition, please clarify that you will separately present
your leasing income
         on the face of the income statement.
Consolidated Financial Statements
17. Segment Information, page 105

3.       We note your response to our prior comment 5. Please respond to the
following
         comments relating to your segment presentation under ASC 280:

                Tell us how often the CODM meets with his/her direct reports,
the financial
              information the CODM reviews to prepare for those meetings, the
financial
              information discussed in those meetings, and who else attends
those meetings.
                If not already covered by your response to bullet 1, describe
the information regularly
              provided to the CODM and how frequently it is prepared. More
specifically, clarify if
              any business units performance results are presented, or
discussed, as part of, or
              outside of the consolidated company-wide performance presentation
that the
              CODM reviews.
 Richard Lindahl
Emergent BioSolutions Inc.
October 29, 2021
Page 3
                Explain how budgets are prepared, who approves the budget at
each step of the
              process, the level of detail discussed at each step, and the
level at which the CODM
              makes changes to the budget.
                Also describe the level of detail communicated to the CODM when
actual results
              differ from budgets and who is involved in meetings with the CODM
to discuss
              budget-to-actual variances.

       You may contact Li Xiao at (202) 551-4391 or Mary Mast at (202) 551-3613
with any
questions.



FirstName LastNameRichard Lindahl                              Sincerely,
Comapany NameEmergent BioSolutions Inc.
                                                               Division of
Corporation Finance
October 29, 2021 Page 3                                        Office of Life
Sciences
FirstName LastName