The following table shows information of the subsidiaries:


							Information of the issuer
	Description of the Securities								Last available financial statements
Name and Issuer	Class		Face Value		Amount		Main Business	Registered Address	Date		Capital stock			Net profit / (loss)			Equity			Holding in Capital Stock
Subsidiaries:⁽⁸⁾
YPF International S.A.⁽⁶⁾		Common	Bs.	100		66,897	Investment	Street La Plata 19, Santa Cruz de la Sierra, República de Bolivia		12-31-17		15			(1	)		24			100.00	%
YPF Holdings Inc.⁽⁶⁾		Common	US$	0.01		810,614	Investment and finance	10333 Richmond Avenue I, Suite 1050, TX, U.S.A.		12-31-17		15,075			(429	)		(3,726	)		100.00	%
Operadora de Estaciones de Servicios S.A.		Common	$	1		163,701,747	Commercial management of YPF’s gas stations	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		164			709			907			99.99	%
A-Evangelista S.A.		Common	$	1		307,095,088	Engineering and construction services	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		307			3			1,127			100.00	%
YPF Servicios Petroleros S.A.		Common	$	1		50,000	Wells perforation and/or reparation services	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		—	⁽⁷⁾		(174	)		(192	)		100.00	%
Metrogas S.A.		Common	$	1		398,419,700	Providing the public service of natural gas distribution	Gregorio Aráoz de Lamadrid 1360, Buenos Aires, Argentina.		12-31-17		569			773			8,985			70.00	%
YPF Energía Eléctrica S.A.		Common	$	1		2,506,555,895	Exploration, development, industrialization and marketing of hydrocarbons, and generation, transportation and marketing of electric power	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		2,507			928			3,441			100.00	%
YPF Chile S.A.⁽⁶⁾		Common	—	—		50,968,649	Lubricants and aviation fuels trading and hydrocarbons research and exploration	Villarica 322; Módulo B1, Qilicura, Santiago		12-31-17		849			(103	)		1,389			100.00	%
YPF Tecnología S.A.		Common	$	1		234,291,000	Investigation, development, production and marketing of technologies, knowledge, goods and services	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		459			38			690			51.00	%
YSUR Inversora S.A.U.⁽⁶⁾⁽⁹⁾		—		—		—	Investment	Macacha Güemes 515, Buenos Aires, Argentina		12-31-16		2,657			(1	)		5,397			100.00	%
YSUR Inversiones Petroleras S.A.U.⁽⁶⁾⁽⁹⁾		—		—		—	Investment	Macacha Güemes 515, Buenos Aires, Argentina		12-31-16		230			—	⁽⁷⁾		391			100.00	%
YSUR Petrolera Argentina S.A. ⁽⁶⁾⁽⁹⁾		—		—		—	Exploration, extraction, exploitation, storage, transportation, industrialization and marketing of hydrocarbons, as well as other related operations	Macacha Güemes 515, Buenos Aires, Argentina		12-31-16		634			106			570			100.00	%
Compañía de Inversiones Mineras S.A.		Common	$	1		236,474,420	Exploration, exploitation, processing, management, storage and transport of all types of minerals; assembly, construction and operation of facilities and structures and processing of products related to mining	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		236			(21	)		182			100.00	%
Bajo del Toro II S.R.L.		Social cuotes	$	1		1,270,815,165	Exploration, discovery, exploitation, purchase, production, storage, transport, import, export and marketing of all types of liquid or gaseous hydrocarbons and exercise all acts that are not prohibited by law including but not limited to the execution of money loans as lender and/or borrower.	Macacha Güemes 515, Buenos Aires, Argentina		12-31-17		1,271			90			1,341			100.00	%

The following table shows the investments in associates and joint ventures:


	12-31-2017																									12-31-2016
												Information of the issuer
	Description of the Securities													Last available financial statements
Name and Issuer	Class		Face Value		Amount		Book value⁽²⁾			Cost⁽¹⁾		Main Business	Registered Address	Date		Capital stock		Net profit / (loss)			Equity		Holding in Capital Stock			Book Value⁽²⁾
Joint Ventures:
Compañía Mega S.A.⁽⁵⁾⁽⁶⁾		Common	$	1		244,246,140		1,725			—	Separation, fractionation and transportation of natural gas liquids	San Martín 344, P. 10º, Buenos Aires, Argentina		09-30-17		643		1,071			2,381		38.00	%		1,208
Profertil S.A.⁽⁶⁾		Common	$	1		391,291,320		2,862			—	Production and marketing of fertilizers	Alicia Moreau de Justo 740, P. 3, Buenos Aires, Argentina		09-30-17		783		197			1,249		50.00	%		1,897
Refinería del Norte S.A.		Common	$	1		45,803,655		483			—	Refining	Maipú 1, P. 2º, Buenos Aires, Argentina		09-30-17		92		(10	)		980		50.00	%		468

								5,070			—																3,573

Associates:
Oleoductos del Valle S.A.		Common	$	10		4,072,749		242			—	Oil transportation by pipeline	Florida 1, P. 10º, Buenos Aires, Argentina		09-30-17		110		135			576		37.00	%		174
Terminales Marítimas Patagónicas S.A.		Common	$	10		476,034		103			—	Oil storage and shipment	Av. Leandro N. Alem 1180, P. 11º, Buenos Aires, Argentina		09-30-17		14		20			304		33.15	%		94
Oiltanking Ebytem S.A.		Common	$	10		351,167		211			—	Hydrocarbon transportation and storage	Terminal Marítima Puerto Rosales – Provincia de Buenos Aires, Argentina.		09-30-17		12		247			279		30.00	%		184
Gasoducto del Pacífico (Argentina) S.A.		Preferred	$	1		15,579,578		44			—	Gas transportation by pipeline	San Martín 323, P.13°, Buenos Aires, Argentina		12-31-17		156		116			445		10.00	%		33
Central Dock Sud S.A.		Common	$	0.01		11,869,095,145		—	⁽¹⁰⁾		—	Electric power generation and bulk marketing	Pasaje Ingeniero Butty 220, P.16°, Buenos Aires, Argentina		03-31-17		1,231		46			1,865		10.25	%⁽⁴⁾		175
Inversora Dock Sud S.A.		Common	$	1		355,270,303		—	⁽¹⁰⁾		—	Investment and finance	Pasaje Ingeniero Butty 220, P.16°, Buenos Aires, Argentina		03-31-17		829		32			1,343		42.86	%		569
Oleoducto Trasandino (Argentina) S.A.		Preferred	$	1		12,135,167		41			—	Oil transportation by pipeline	Macacha Güemes 515, P.3º, Buenos Aires, Argentina		09-30-17		34		9			118		36.00	%		37
YPF Gas S.A		Common	$	1		59,821,434		235			—	Gas fractionation, bottling, distribution and transport for industrial and/or residential use	Macacha Güemes 515, P.3º, Buenos Aires, Argentina		09-30-17		176		215			884		34.00	%		172
Other companies:
Other⁽³⁾		—		—		—		111	⁽¹⁰⁾		208	—	—		—		—		—			—		—			489

								987			208																1,927

								6,057			208																5,500

(1)	Corresponds to cost and contributions, net of dividends collected and capital reductions.

(2)	Corresponds to Holding in shareholders’ equity plus adjustments to conform to YPF accounting principles.

(3)	Includes Gasoducto del Pacífico (Cayman) Ltd., A&C Pipeline Holding Company, Poligás Luján S.A.C.I., Oleoducto Transandino (Chile) S.A., Bizoy S.A., Civeny S.A., Bioceres S.A. and Petrofaro S.A.

(4)	Additionally, the Group has a 29.99% indirect holding in capital stock through Inversora Dock Sud S.A.

(5)	As stipulated by shareholders’ agreement, joint control is held in this company by shareholders.

(6)	The U.S. dollar has been defined as the functional currency of this company.

(7)	No value is disclosed because the carrying value is less than 1.

(8)

Additionally, consolidates Compañía Minera de Argentina S.A., YPF Services USA Corp., YPF Europe B.V., YPF Brasil Comércio Derivado de Petróleo Ltda, Wokler Investment S.A., YPF Colombia S.A.S., Miwen S.A., Eleran Inversiones 2011 S.A.U., Lestery S.A., Energía Andina S.A Resources Netherlands B.V. and Bajo de Toro I S.R.L.

(9)	Companies merged with YPF.

(10)	The investments that YPF holds in CDS, IDS, YGEN I e YGEN II through its subsidiary YPF EE were reclassified to Assets held for disposal. See Note 3 and the evolution of Investments in associates and joint ventures in this Note.