FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Novartis Bioventures Ltd 		2. Issuer Name and Ticker or Trading Symbol

Altimmune, Inc. [ ALT ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      __ X __ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

C/O NOVARTIS INTERNATIONAL AG, LICHTSTRASSE 35 		3. Date of Earliest Transaction (MM/DD/YYYY)

9/12/2018
(Street)

BASEL, V8 CH-4056
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $0.0001   9/12/2018     J (1)    2069993   A   (1) 8345145   I   See Footnote   (2)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrants   $2.67   9/12/2018     J   (1)       465086    8/21/2017   8/21/2022   Common Stock, par value $0.0001   465086     (3) 0   I   See Footnote   (2)

Explanation of Responses:
(1)  Pursuant to the terms of the Exchange Agreement between the Issuer and the Reporting Persons dated July 11, 2018, the remaining warrants to purchase the Issuer's common stock (the "Warrants") were exchanged for shares of the Issuer's common stock, par value $0.0001 per share.
(2)  The board of directors of Novartis Bioventures Ltd has sole voting and investment control and power over such securities. None of the members of its board of directors has individual voting or investment power with respect to such securities and each disclaims beneficial ownership of such securities. Novartis Bioventures Ltd is an indirectly owned subsidiary of Novartis AG.
(3)  Warrants to purchase shares of the Issuer's Common Stock were acquired in connection with the acquisition of the Preferred Stock and reported on this Form 4. The Warrants held by Novartis may not be exercised if such exercise would cause Novartis to hold more than 19.99% of the Issuer's Common Stock, regardless of receipt by the Issuer of the Requisite Stockholder Approval.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Novartis Bioventures Ltd
C/O NOVARTIS INTERNATIONAL AG
LICHTSTRASSE 35
BASEL, V8 CH-4056
X

NOVARTIS AG
C/O NOVARTIS INTERNATIONAL AG
LICHTSTRASSE 35
BASEL, V8 CH-4056
X


Signatures
/s/ Bart Dzikowski, Secretary of the Board of Novartis Bioventures Ltd 9/14/2018
** Signature of Reporting Person Date

/s/ Stephan Sandmeier, Authorized Signatory of Novartis Bioventures Ltd 9/14/2018
** Signature of Reporting Person Date

/s/ Bart Dzikowski, Authorized Signatory of Novartis AG 9/14/2018
** Signature of Reporting Person Date

/s/ Stephan Sandmeier, Authorized Signatory of Novartis AG 9/14/2018
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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