UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934

(Amendment No. 4)*

Hortonworks, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

440894103

(CUSIP Number)

December 31, 2018

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☐ Rule 13d-1(b)

☐ Rule 13d-1(c)

☒ Rule 13d-1(d)

*	The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


CUSIP No. 440894103		Page 2 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Ventures IV (Jersey) L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 1,042,130
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 1,042,130
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,042,130
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.25%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 3 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Ventures IV Parallel Entrepreneur Fund (Jersey) L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 100,334
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 100,334
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 100,334
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.12%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 4 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Ventures Associates IV Limited
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 0
		6	SHARED VOTING POWER 1,151,666
		7	SOLE DISPOSITIVE POWER 0
		8	SHARED DISPOSITIVE POWER 1,151,666
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,151,666
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.38%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 5 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Ventures V (Jersey) L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 1,126,746
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 1,126,746
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,126,746
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.35%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 6 of 16 Pages


1	NAMES OF REPORTING PERSONS Yucca (Jersey) SLP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 23,581
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 23,581
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 23,581
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.03%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 7 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Ventures V Parallel Entrepreneur Fund (Jersey) L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 9,129
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 9,129
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9,129
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.01%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN


CUSIP No. 440894103		Page 8 of 16 Pages


1	NAMES OF REPORTING PERSONS Index Venture Associates V Limited
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Jersey, Channel Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 0
		6	SHARED VOTING POWER 1,150,254
		7	SOLE DISPOSITIVE POWER 0
		8	SHARED DISPOSITIVE POWER 1,150,254
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,150,254
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.38%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN

Item 1(a).

Name of Issuer:

Hortonworks, Inc. (“Issuer”)

Item 1(b).

Address of Issuer’s Principal Executive Offices:

5470 Great America Parkway, Santa Clara, CA 95054

Item 2(a).

Name of Person Filing:

Index Ventures IV (Jersey) L.P.

ii.

Index Ventures IV Parallel Entrepreneur Fund (Jersey) L.P.

iii.

Index Venture Associates IV Limited

iv.

Index Ventures V (Jersey) L.P.

Yucca (Jersey) SLP

vi.

Index Ventures V Parallel Entrepreneur Fund (Jersey) L.P.

vii.

Index Venture Associates V Limited

Item 2(b).

Address of Principal Business Office or, if none, Residence:

Hortonworks, Inc. SC 13G/A