SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Meritech Capital Associates III L.L.C. (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 06/24/2015	3. Issuer Name and Ticker or Trading Symbol GLAUKOS Corp [ GKOS ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series E Convertible Preferred Stock	(1)	(1)	Common Stock	1,862,784	(1)	I	Through Meritech Capital Partners III L.P.(2)
Series E Convertible Preferred Stock	(1)	(1)	Common Stock	33,951	(1)	I	Through Meritech Capital Affiliates III, L.P.(2)
Series F Convertible Preferred Stock	(1)	(1)	Common Stock	1,109,717	(1)	I	Through Meritech Capital Partners III L.P.(2)
Series F Convertible Preferred Stock	(1)	(1)	Common Stock	20,226	(1)	I	Through Meritech Capital Affiliates III, L.P.(2)

1. Name and Address of Reporting Person* Meritech Capital Associates III L.L.C. (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Meritech Capital Partners III LP (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* MERITECH CAPITAL AFFILIATES III L P (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GORDON MICHAEL B (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Ward Rob (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Bischof George (Last) (First) (Middle) C/O MERITECH CAPITAL PARTNERS 245 LYTTON AVE, SUITE 125 (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The shares of Series E Convertible Preferred Stock and Series F Convertible Preferred Stock shall automatically convert into shares of common stock on a 1:1 basis immediately prior to the consummation of the Issuer's initial public offering and have no expiration date.

2. Meritech Capital Associates III L.L.C., a Delaware limited liability company ("MCA III"), serves as the sole general partner of Meritech Capital Partners III L.P., a Delaware limited partnership ("MCP III") and of Meritech Capital Affiliates III, L.P., a Delaware limited partnership ("MCAFF III"). Meritech Management Associates III L.L.C., a Delaware limited liability company ("MMA III") is a managing member of MCA III. Paul S. Madera, Michael B. Gordon, Robert D. Ward and George H. Bischof are the managing members of MMA III and share voting and dispositive power over the shares held by MCP III, MCAFF III, MCA III and MMA III; however, they disclaim beneficial ownership of the shares held by such entities except to the extent of their pecuniary interests therein. Paul S. Madera is a director of the Issuer, and, accordingly, files separate Section 16 reports.

Remarks:

This report is one of two reports, each on a separate Form 3, but relating to the same transaction being filed by entities affiliated with Meritech Capital Partners and their associated managing members.

	/s/ Joel Backman, Attorney-in-fact for above-listed entities (or individuals)	06/24/2015
	** Signature of Reporting Person	Date
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