Statement of Changes in Beneficial Ownership (4)

FORM 4

[X] 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 * SIEGALL CLAY B	2. Issuer Name and Ticker or Trading Symbol ALDER BIOPHARMACEUTICALS INC [ ALDR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) C/O ALDER BIOPHARMACEUTICALS, INC., 11804 NORTH CREEK PARKWAY SOUTH	3. Date of Earliest Transaction (MM/DD/YYYY) 10/22/2019
(Street) BOTHELL, WA 98011 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ 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	10/22/2019 (1)		U		31714	D	$18.00 (2)	0	D

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
Stock Option (Right to Buy)	$4.455	10/22/2019 (3)		D			6363	(4)(5)	2/25/2020	Common Stock	6363	$0.00	0	D
Stock Option (Right to Buy)	$3.96	10/22/2019 (3)		D			6363	(5)(6)	5/9/2021	Common Stock	6363	$0.00	0	D
Stock Option (Right to Buy)	$3.465	10/22/2019 (3)		D			6363	(5)(7)	3/12/2023	Common Stock	6363	$0.00	0	D
Stock Option (Right to Buy)	$3.465	10/22/2019 (3)		D			6363	(5)(8)	3/12/2023	Common Stock	6363	$0.00	0	D
Stock Option (Right to Buy)	$6.325	10/22/2019 (3)		D			6363	(5)(9)	1/8/2024	Common Stock	6363	$0.00	0	D
Stock Option (Right to Buy)	$39.66	10/22/2019 (3)		D			6350	(10)(11)	5/18/2025	Common Stock	6350	$0.00	0	D
Stock Option (Right to Buy)	$29.26	10/22/2019 (3)		D			15000	(11)(12)	5/25/2026	Common Stock	15000	$0.00	0	D
Stock Option (Right to Buy)	$16.90	10/22/2019 (3)		D			15000	(5)(13)	5/23/2027	Common Stock	15000	$0.00	0	D
Stock Option (Right to Buy)	$15.50	10/22/2019 (3)		D			15000	(5)(14)	5/22/2028	Common Stock	15000	$0.00	0	D
Stock Option (Right to Buy)	$11.01	10/22/2019 (3)		D			22500	(5)(15)	5/22/2029	Common Stock	22500	$0.00	0	D

Explanation of Responses:
(1)	On September 16, 2019, the Reporting Person entered into a Tender and Support (the "Support Agreement") with H. Lundbeck A/S ("Lundbeck"), Lundbeck LLC, Violet Acquisition Corp., a wholly owned subsidiary of Lundbeck ("Purchaser") and certain other securityholders of Issuer, pursuant to which the Reporting Person agreed to tender all shares of the Issuer's Common Stock, Class A-1 Convertible Preferred Stock or shares of Common Stock underlying stock options, as the case may be, held by Reporting Person to Purchaser (the "Tender Offer"). On October 22, 2019, Purchaser accepted the Tender Offer.
(2)	The Reporting Person will also receive one non-transferable contingent value right for each share held, which will entitle them to receive up to an additional $2.00 per share upon achievement of a milestone.
(3)	On September 16, 2019, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Lundbeck, Lundbeck LLC and Purchaser. On October 22, 2019 (the "Effective Time"), Purchaser merged with and into the Issuer pursuant to Section 251(h) of the General Corporation Law of the State of Delaware, with the Issuer being the surviving corporation and becoming a wholly-owned subsidiary of Lundbeck.
(4)	The shares subject to this option shall vest and become exercisable at a rate of 25% of the total number of shares on the one-year anniversary of February 26, 2010 (the "2010 Vesting Commencement Date") and 1/48th of the total number of shares each monthly anniversary of the 2010 Vesting Commencement Date thereafter, for so long as the Reporting Person provides continuous service to the Issuer, such that the total number of shares shall be fully vested on the four-year anniversary of the 2010 Vesting Commencement Date. The shares subject to this option are fully vested as of the date hereof.
(5)	The shares subject to this option, whether or not vested, were cancelled and converted into the right to receive both (i) a cash payment equal to (A) the excess, if any of (x) $18.00 over (y) the Exercise Price per share listed in Column 2 of Table II of this Form 4, multiplied by (B) the total number of shares listed in Column 5 of Table II of this Form 4, and (ii) one non-transferable contingent value right for each share subject to this option, which represents the contractual right to receive up to an additional $2.00 per share upon achievement of a milestone.
(6)	The shares subject to this option shall vest and become exercisable at a rate of 25% of the total number of shares on the one-year anniversary of January 1, 2011 (the "2011 Vesting Commencement Date") and 1/48th of the total number of shares each monthly anniversary of the 2011 Vesting Commencement Date thereafter, for so long as the Reporting Person provides continuous service to the Issuer, such that the total number of shares shall be fully vested on the four-year anniversary of the 2011 Vesting Commencement Date. The shares subject to this option are fully vested as of the date hereof.
(7)	The shares subject to this option shall vest and become exercisable at a rate of 25% of the total number of shares on the one-year anniversary of January 1, 2012 (the "2012 Vesting Commencement Date") and 1/48th of the total number of shares each monthly anniversary of the 2012 Vesting Commencement Date thereafter, for so long as the Reporting Person provides continuous service to the Issuer, such that the total number of shares shall be fully vested on the four-year anniversary of the 2012 Vesting Commencement Date. The shares subject to this option are fully vested as of the date hereof.
(8)	The shares subject to this option shall vest and become exercisable at a rate of 25% of the total number of shares on the one-year anniversary of January 1, 2013 (the "2013 Vesting Commencement Date") and 1/48th of the total number of shares each monthly anniversary of the 2013 Vesting Commencement Date thereafter, for so long as the Reporting Person provides continuous service to the Issuer, such that the total number of shares shall be fully vested on the four-year anniversary of the 2013 Vesting Commencement Date. The shares subject to this option are fully vested as of the date hereof.
(9)	The shares subject to this option shall vest and become exercisable at a rate of 25% of the total number of shares on the one-year anniversary of January 1, 2014 (the "2014 Vesting Commencement Date") and 1/48th of the total number of shares each monthly anniversary of the 2014 Vesting Commencement Date thereafter, for so long as the Reporting Person provides continuous service to the Issuer, such that the total number of shares shall be fully vested on the four-year anniversary of the 2014 Vesting Commencement Date. The shares subject to this option are fully vested as of the date hereof.
(10)	The shares subject to this option shall fully vest and become exercisable on the date of the 2016 Annual Meeting of the Stockholders of the Issuer, so long as the Reporting Person provides continuous service to the Issuer through such date. The shares subject to this option are fully vested as of the date hereof.
(11)	The shares subject to this option, whether or not vested, were cancelled at the Effective Time without any consideration payable therefor.
(12)	The shares subject to this option shall fully vest and become exercisable on the date of the 2017 Annual Meeting of the Stockholders of the Issuer, so long as the Reporting Person provides continuous service to the Issuer through such date. The shares subject to this option are fully vested as of the date hereof.
(13)	The shares subject to this option shall fully vest and become exercisable on the date of the 2018 Annual Meeting of the Stockholders of the Issuer, so long as the Reporting Person provides continuous service to the Issuer through such date. The shares subject to this option are fully vested as of the date hereof.
(14)	The shares subject to this option shall fully vest and become exercisable on the date of the 2019 Annual Meeting of the Stockholders of the Issuer, so long as the Reporting Person provides continuous service to the Issuer through such date. The shares subject to this option are fully vested as of the date hereof.
(15)	The shares subject to this option shall fully vest and become exercisable on the date of the 2020 Annual Meeting of the Stockholders of the Issuer, so long as the Reporting Person provides continuous service to the Issuer through such date.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SIEGALL CLAY B C/O ALDER BIOPHARMACEUTICALS, INC. 11804 NORTH CREEK PARKWAY SOUTH BOTHELL, WA 98011	X

Signatures
/s/ Alan Hambelton, Attorney-in-Fact		10/24/2019
**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).
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