SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
X	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Siegel Kenneth M (Last) (First) (Middle) C/O CYAN, INC. 1383 N. MCDOWELL BLVD., SUITE 300 (Street) PETALUMA CA 94954 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol CYAN INC [ CYNI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) VP & General Counsel
	3. Date of Earliest Transaction (Month/Day/Year) 08/03/2015
	4. If Amendment, Date of Original Filed (Month/Day/Year)	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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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	08/03/2015		D		277,029(1)	D	(2)(3)	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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
Employee Stock Option (right to buy)	$3.2	08/03/2015		D			250,000	(4)	09/24/2022	Common Stock	250,000	$0.00	0	D
Employee Stock Option (right to buy)	$11	08/03/2015		D			50,000	(5)	05/07/2023	Common Stock	50,000	$0.00	0	D
Performance Restricted Stock Units	(6)	08/03/2015		A		90,909		(7)	(7)	Common Stock	90,909	$0.00	90,909	D
Performance Restricted Stock Units	(6)	08/03/2015		D			90,909	(7)(8)	(7)(8)	Common Stock	90,909	$0.00	0	D

Explanation of Responses:

1. Of the reported securities, 188,637 shares are represented by restricted stock units.

2. Pursuant to the Merger Agreement between the Issuer and Ciena Corporation ("Ciena") dated May 3, 2015, as amended (the "Merger Agreement"), each share of Issuer common stock will be exchanged for $0.63 in cash and 0.19936 shares of Ciena common stock.

3. Pursuant to the Merger Agreement, the restricted stock units will be assumed by Ciena and converted into a restricted stock unit for 0.224 shares of Ciena common stock per share of Issuer common stock.

4. One-fourth of the shares subject to the option vested on September 17, 2013 and one forty-eighth of the shares vest monthly thereafter. Pursuant to the Merger Agreement, the option will be assumed by Ciena and converted into an option to purchase 0.224 shares of Ciena common stock for each share of Issuer common stock at an exercise price equal to the current exercise price divided by 0.224 per share.

5. Shares subject to the option vest in forty-eight equal monthly installments beginning on June 8, 2013. Pursuant to the Merger Agreement, the option will be assumed by Ciena and converted into an option to purchase 0.224 shares of Ciena common stock for each share of Issuer common stock at an exercise price equal to the current exercise price divided by 0.224 per share.

6. Each performance restricted stock unit represents a contingent right to receive one share of Issuer common stock.

7. The performance restricted stock units are subject to the achievement of certain performance objectives relating to 2015 revenue goals. To the extent the applicable performance goals are achieved, 50% of performance restricted stock units are scheduled to vest on the date the achievement of the performance goals are certified after completion of the performance period and the remaining 50% are scheduled to vest on the first business day in 2017.

8. Pursuant to the Merger Agreement, the performance restricted stock units will be assumed by Ciena and converted into a performance restricted stock unit for 0.224 shares of Ciena common stock per share of Issuer common stock.

Remarks:

	/s/ Kenneth M. Siegel	08/03/2015
	** 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 Number.