SEC Info - BCIP Trust Associates IV-B, L.P., et al. - ‘4’ for 9/23/16 re: Trinseo S.A.

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

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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^*

BAIN CAPITAL INVESTORS LLC

(Last)

(First)

(Middle)

200 CLARENDON STREET

(Street)

BOSTON

02116

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Trinseo S.A. [ TSE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
9/23/16

4. 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 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
ORDINARY SHARES	9/23/16		S		10,669,567	D	$54.05	0	I	See Footnotes ⁽¹⁾ ⁽²⁾ ⁽³⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

1. Name and Address of Reporting Person^*

BAIN CAPITAL INVESTORS LLC

(Last)

(First)

(Middle)

200 CLARENDON STREET

(Street)

BOSTON

02116

(City)

(State)

(Zip)

1. Name and Address of Reporting Person^*

BCIP Trust Associates IV-B, L.P.

(Last)

(First)

(Middle)

200 CLARENDON STREET

(Street)

BOSTON

02116

(City)

(State)

(Zip)

Explanation of Responses:

(1) Represents ordinary shares of Trinseo S.A. held by Bain Capital Everest Manager Holding SCA ("BCEM Holding"), whose general partner is Bain Capital Everest Manager S.a r.l. ("BCEM"). On September 23, 2016, BCEM Holding sold 10,669,567 Ordinary Shares. Following such sale, BCEM Holding held zero Ordinary Shares.

(2) All of the outstanding share capital of BCEM is held by Bain Capital Europe Fund III, L.P. ("Europe Fund III") and, in that capacity, Europe Fund III has the power to appoint the managers of BCEM. Bain Capital Investors, LLC ("BCI") is the general partner of Bain Capital Partners Europe III, L.P. ("Partners Europe III"), which is the general partner of Europe Fund III. BCI is also the general partner of Bain Capital Partners X, L.P. ("Partners X"), which is the general partner of Bain Capital Fund X, L.P. ("Fund X"). Boylston Coinvestors, LLC is the general partner of BCIP Associates IV, L.P. ("BCIP IV"), BCIP Associates IV-B, L.P. ("BCIP IV-B"), BCIP Trust Associates IV, L.P. ("BCIP Trust IV") and BCIP Trust Associates IV-B, L.P. ("BCIP Trust IV-B," and, together with BCEM Holdings, BCEM, Europe Fund III, Partners Europe III, Fund X, Partners X, BCIP IV, BCIP IV-B and BCIP Trust IV, the "Bain Capital Entities").

(3) The governance, investment strategy and decision-making process with respect to the investments held by all of the Bain Capital Entities is directed by BCI's Global Private Equity Board. As a result, BCI may be deemed to share voting and dispositive power with respect to the shares of Trinseo S.A. held by BCEM Holding. BCI disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Remarks:

Form 2 of 2

	BAIN CAPITAL INVESTORS, LLC, By: /s/ Stephen Thomas, Managing Director	9/27/16
	BCIP TRUST ASSOCIATES IV-B, L.P., By: Boylston Coinvestors, LLC, its general partner, By: /s/ Stephen Thomas, Name: Stephen Thomas, Title: Authorized Signatory	9/27/16
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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____________ Transaction Code:
S	Open market or private sale of non-derivative or derivative security.

BCIP Trust Associates IV-B, L.P., et al. – ‘4’ for 9/23/16 re: Trinseo S.A.

On: Tuesday, 9/27/16, at 4:56pm ET · For: 9/23/16 · Accession #: 899243-16-30142 · File #: 1-36473

Previous ‘4’: ‘4’ on 8/16/16 for 8/12/16 · Next & Latest: ‘4’ on 7/6/23 for 7/5/23

Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 — SEA’34
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BCIP Trust Associates IV-B, L.P., et al. – ‘4’ for 9/23/16 re: Trinseo S.A.

On: Tuesday, 9/27/16, at 4:56pm ET · For: 9/23/16 · Accession #: 899243-16-30142 · File #: 1-36473

Previous ‘4’: ‘4’ on 8/16/16 for 8/12/16 · Next & Latest: ‘4’ on 7/6/23 for 7/5/23

Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 — SEA’34Filing Table of Contents

This ‘4’ Document is an XML Data File that may be rendered in various formats:

Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 — SEA’34
Filing Table of Contents