PARTICIPATION NOTIFICATION BY BLACKROCK INC.

Brussels, Thursday June 8, 2017, 8h00 CET --- According to the Belgian transparency legislation in force (Law of May 2, 2007), BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.) has notified Solvay S.A. that:

On June 1, 2017 the number of direct voting rights held by BlackRock Inc. crossed downward the 3% statutory threshold. Including voting rights held through equivalent financial instruments, BlackRock Inc. remained above the 3% statutory threshold, however, detaining 3.16% of the existing voting rights emitted by Solvay S.A.
On June 2, 2017 the number of direct voting rights held by BlackRock Inc. crossed upward the 3% statutory threshold again. Including voting rights held through equivalent financial instruments, BlackRock Inc. detained 3.17% of the existing voting rights emitted by Solvay S.A.
On June 5, 2017 the number of direct voting rights held by BlackRock Inc. crossed downward the 3% statutory threshold. Including voting rights held through equivalent financial instruments, BlackRock Inc. remained above the 3% statutory threshold, however, detaining 3.18% of the existing voting rights emitted by Solvay S.A.

The declarations by BlackRock Inc. are published in the Investor Relations Section of Solvay's website.

Notification on June 2, 2017:

Reason for the notification: Disposal of voting securities or voting rights
Notified by: BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.)
Persons subject to the notification requirement:

Name	Address (for legal entities)
BlackRock, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock (Netherlands) B.V.	Rembrandt Tower, 17th floor, Amstelplein, Amsterdam, Netherlands
BlackRock (Singapore) Limited	20 Anson Road #18-01, Singapore, 79912, Singapore
BlackRock Advisors (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Advisors, LLC	100 Bellevue Parkway, Wilmington, DE, 19809, U.S.A.
BlackRock Asset Management Canada Limited	161 Bay Street, Suite 2500, Toronto, Ontario, M5J 2S1, Canada
BlackRock Asset Management Deutschland AG	Max-Joseph-Straße 6, Munich, 80333, Germany
BlackRock Asset Management North Asia Limited	15/F, 16/F, 17/F Citibank Tower & 17/F ICBC Tower, 3 Garden Road, Central, Hong Kong
BlackRock Financial Management, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock Fund Advisors	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock Institutional Trust Company, National Association	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock International Limited	Exchange Place One, 1 Semple Street, Edinburgh, EH3 8BL, U.K.
BlackRock Investment Management (Australia) Limited	Level 37, Chifley Tower, 2 Chifley Square, Sydney NSW 2000 Australia
BlackRock Investment Management (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Investment Management, LLC	1 University Square Drive, Princeton, NJ, 8540, U.S.A.
BlackRock Japan Co., Ltd.	1-8-3 Marunouchi Chiyoda-ku, Trust Tower Main, Tokyo, 100-8217, Japan

Date on which the threshold is crossed: June 1, 2017

Threshold crossed: 3% downwards (lowest declaration threshold)
Denominator: 105,876,416

Notification details: The voting rights and equivalent financial instruments total 3,348,465 voting rights or 3.16%.

A) Voting rights	Previous notification	After the transaction
	# of voting rights	# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
BlackRock, Inc.	0	0		0.00%
BlackRock (Netherlands) B.V.	10,456	10,456		0.01%
BlackRock (Singapore) Limited	4,409	4,409		0.00%
BlackRock Advisors (UK) Limited	715,494	676,324		0.64%
BlackRock Advisors, LLC	38,705	40,812		0.04%
BlackRock Asset Management Canada Limited	35,272	33,633		0.03%
BlackRock Asset Management Deutschland AG	117,823	117,823		0.11%
BlackRock Asset Management North Asia Limited	445	445		0.00%
BlackRock Financial Management, Inc.	3,525	3,525		0.00%
BlackRock Fund Advisors	921,784	920,054		0.87%
BlackRock Institutional Trust Company, National Association	1,044,124	1,040,584		0.98%
BlackRock International Limited	2,506	2,506		0.00%
BlackRock Investment Management (Australia) Limited	31,719	31,694		0.03%
BlackRock Investment Management (UK) Limited	123,989	123,989		0.12%
BlackRock Investment Management, LLC	74,954	75,498		0.07%
BlackRock Japan Co., Ltd.	94,096	88,146		0.08%
Subtotal	3,219,301	3,169,898		2.99%

B) Equivalent financial instruments	After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expirati on date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
BlackRock Advisors (UK) Limited	Securities Lent			165,710	0.16%	physical
BlackRock Fund Advisors	Securities Lent			4,091	0.00%	physical
BlackRock Institutional Trust Company, National Association	Securities Lent			309	0.00%	physical
BlackRock Advisors (UK) Limited	Contract For Difference			684	0.00%	cash
BlackRock Advisors, LLC	Contract For Difference			52	0.00%	cash
BlackRock Institutional Trust Company, National Association	Contract For Difference			4,650	0.00%	cash
BlackRock Investment Management, LLC	Contract For Difference			3,071	0,00%	cash
Subtotal				178,567	0.17%

Transparency declaration

Regulated information

Chain of control:

Notification on June 6, 2017:

Reason for the notification: Acquisition of voting securities or voting rights
Notified by: BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.)
Persons subject to the notification requirement:

Name	Address (for legal entities)
BlackRock, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock (Netherlands) B.V.	Rembrandt Tower, 17th floor, Amstelplein, Amsterdam, Netherlands
BlackRock (Singapore) Limited	20 Anson Road #18-01, Singapore, 79912, Singapore
BlackRock Advisors (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Advisors, LLC	100 Bellevue Parkway, Wilmington, DE, 19809, U.S.A.
BlackRock Asset Management Canada Limited	161 Bay Street, Suite 2500, Toronto, Ontario, M5J 2S1, Canada
BlackRock Asset Management Deutschland AG	Max-Joseph-Straße 6, Munich, 80333, Germany
BlackRock Asset Management North Asia Limited	15/F, 16/F, 17/F Citibank Tower & 17/F ICBC Tower, 3 Garden Road, Central, Hong Kong
BlackRock Financial Management, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock Fund Advisors	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock Institutional Trust Company, National Association	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock International Limited	Exchange Place One, 1 Semple Street, Edinburgh, EH3 8BL, U.K.
BlackRock Investment Management (Australia) Limited	Level 37, Chifley Tower, 2 Chifley Square, Sydney NSW 2000 Australia
BlackRock Investment Management (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Investment Management, LLC	1 University Square Drive, Princeton, NJ, 8540, U.S.A.
BlackRock Japan Co., Ltd.	1-8-3 Marunouchi Chiyoda-ku, Trust Tower Main, Tokyo, 100-8217, Japan

Date on which the threshold is crossed: June 02, 2017

Threshold crossed: 3% upward (lowest declaration threshold)

Denominator: 105,876,416

Notification details: The voting rights and equivalent financial instruments total 3,355,748 voting rights or 3.17%.

A) Voting rights	Previous notification	After the transaction
	# of voting rights	# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
BlackRock, Inc.	0	0		0.00%
BlackRock (Netherlands) B.V.	10,456	10,456		0.01%
BlackRock (Singapore) Limited	4,409	4,409		0.00%
BlackRock Advisors (UK) Limited	676,324	673,439		0.64%
BlackRock Advisors, LLC	40,812	40,812		0.04%
BlackRock Asset Management Canada Limited	33,633	33,633		0.03%
BlackRock Asset Management Deutschland AG	117,823	117,823		0.11%
BlackRock Asset Management North Asia Limited	445	445		0.00%
BlackRock Financial Management, Inc.	3,525	3,525		0.00%
BlackRock Fund Advisors	920,054	920,217		0.87%
BlackRock Institutional Trust Company, National Association	1,040,584	1,050,588		0.99%
BlackRock International Limited	2,506	2,506		0.00%
BlackRock Investment Management (Australia) Limited	31,694	31,694		0.03%
BlackRock Investment Management (UK) Limited	123,989	123,989		0.12%
BlackRock Investment Management, LLC	75,498	75,499		0.07%
BlackRock Japan Co., Ltd.	88,146	88,146		0.08%
Subtotal	3,169,898	3,177,181		3.00%

B) Equivalent financial instruments		After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expiration date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
BlackRock Advisors (UK) Limited	Securities Lent			165,710	0.16%	physical
BlackRock Fund Advisors	Securities Lent			4,091	0.00%	physical
BlackRock Institutional Trust Company, National Association	Securities Lent			309	0.00%	physical
BlackRock Advisors (UK) Limited	Contract For Difference			684	0.00%	cash
BlackRock Advisors, LLC	Contract For Difference			52	0.00%	cash
BlackRock Institutional Trust Company, National Association	Contract For Difference			4,650	0.00%	cash
BlackRock Investment Management, LLC	Contract For Difference			3,071	0.00%	cash
Subtotal				178,567	0.17%

Transparency declaration

Regulated information

Chain of control:

Notification on June 7, 2017:

Reason for the notification: Disposal of voting securities or voting rights
Notified by: BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.)
Persons subject to the notification requirement:

Name	Address (for legal entities)
BlackRock, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock (Netherlands) B.V.	Rembrandt Tower, 17th floor, Amstelplein, Amsterdam, Netherlands
BlackRock (Singapore) Limited	20 Anson Road #18-01, Singapore, 79912, Singapore
BlackRock Advisors (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Advisors, LLC	100 Bellevue Parkway, Wilmington, DE, 19809, U.S.A.
BlackRock Asset Management Canada Limited	161 Bay Street, Suite 2500, Toronto, Ontario, M5J 2S1, Canada
BlackRock Asset Management Deutschland AG	Max-Joseph-Straße 6, Munich, 80333, Germany
BlackRock Asset Management North Asia Limited	15/F, 16/F, 17/F Citibank Tower & 17/F ICBC Tower, 3 Garden Road, Central, Hong Kong
BlackRock Financial Management, Inc.	55 East 52nd Street, New York, NY, 10055, U.S.A.
BlackRock Fund Advisors	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock Institutional Trust Company, National Association	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock International Limited	Exchange Place One, 1 Semple Street, Edinburgh, EH3 8BL, U.K.
BlackRock Investment Management (Australia) Limited	Level 37, Chifley Tower, 2 Chifley Square, Sydney NSW 2000 Australia
BlackRock Investment Management (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Investment Management, LLC	1 University Square Drive, Princeton, NJ, 8540, U.S.A.
BlackRock Japan Co., Ltd.	1-8-3 Marunouchi Chiyoda-ku, Trust Tower Main, Tokyo, 100-8217, Japan

Date on which the threshold is crossed: June 5, 2017

Threshold crossed: 3% downwards (lowest declaration threshold)

Denominator: 105,876,416

Notification details: The voting rights and equivalent financial instruments total 3,362,073 voting rights or 3.18%.

A) Voting rights	Previous notification	After the transaction
	# of voting rights		# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
BlackRock, Inc.	0	0		0.00%
BlackRock (Netherlands) B.V.	10,456	10,456		0.01%
BlackRock (Singapore) Limited	4,409	4,409		0.00%
BlackRock Advisors (UK) Limited	673,439	616,279		0.58%
BlackRock Advisors, LLC	40,812	40,812		0.04%
BlackRock Asset Management Canada Limited	33,633	33,633		0.03%
BlackRock Asset Management Deutschland AG	117,823	117,823		0.11%
BlackRock Asset Management North Asia Limited	445	445		0.00%
BlackRock Financial Management, Inc.	3,525	3,525		0.00%
BlackRock Fund Advisors	920,217	920,210		0.87%
BlackRock Institutional Trust Company, National Association	1,050,588	1,050,588		0.99%
BlackRock International Limited	2,506	2,506		0.00%
BlackRock Investment Management (Australia) Limited	31,694	31,694		0.03%
BlackRock Investment Management (UK) Limited	123,989	123,989		0.12%
BlackRock Investment Management, LLC	75,499	75,498		0.07%
BlackRock Japan Co., Ltd.	88,146	88,146		0.08%
Subtotal	3,177,181	3,120,013		2.95%

B) Equivalent financial instruments	After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expiratio n date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
BlackRock Advisors (UK) Limited	Securities Lent			229,203	0.22%	physical
BlackRock Fund Advisors	Securities Lent			4,091	0.00%	physical
BlackRock Institutional Trust Company, National Association	Securities Lent			309	0.00%	physical
BlackRock Advisors (UK) Limited	Contract For Difference			684	0.00%	cash
BlackRock Advisors, LLC	Contract For Difference			52	0.00%	cash
BlackRock Institutional Trust Company, National Association	Contract For Difference			4,650	0.00%	cash
BlackRock Investment Management, LLC	Contract For Difference			3,071	0.00%	cash
Subtotal				242,060	0.23%

Transparency declaration

Regulated information

Chain of control:

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An international chemical and advanced materials company, Solvay assists its customers in innovating, developing and delivering high-value, sustainable products and solutions which consume less energy and reduce CO2 emissions, optimize the use of resources and improve the quality of life. Solvay serves diversified global end markets, including automotive and aerospace, consumer goods and healthcare, energy and environment, electricity and electronics, building and construction as well as industrial applications. Solvay is headquartered in Brussels with about 30,900 employees spread across 53 countries. It generated pro forma net sales of € 12.4 bn in 2015, with 90% made from activities where it ranks among the world's top 3 players. Solvay SA (SOLB.BE) is listed on Euronext in Brussels and Paris (Bloomberg: SOLB.BB - Reuters: SOLB.BR).

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PARTICIPATION NOTIFICATION BY BLACKROCK INC.

Notification on June 2, 2017:

Transparency declaration

Chain of control:

Notification on June 6, 2017:

Transparency declaration

Chain of control:

Notification on June 7, 2017:

Transparency declaration

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