TSEOQ

SEC source: 0001179110-21-002203 · edgar.xml · nonDerivative · entry 1

Leib Ryan J · CIK 0001659260 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,768

F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.

SEC source: 0001179110-21-002200 · edgar.xml · nonDerivative · entry 1

Thomas Timothy J · CIK 0001790892 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,117

F1 · shares: Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.

SEC source: 0001567619-21-004543 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,707,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,511,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-004543 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,712,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,511,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001179110-21-001978 · edgar.xml · derivative · entry 2

Reverberi Francesca · CIK 0001811002 · VP, Eng Mtrls & Synth Rubber

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,612

Underlying: Ordinary Shares · 6,612 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001978 · edgar.xml · nonDerivative · entry 1

Reverberi Francesca · CIK 0001811002 · VP, Eng Mtrls & Synth Rubber

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,778

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001976 · edgar.xml · derivative · entry 2

Lanning Andre · CIK 0001810969 · VP, Strategy, Corp Dev & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,702

Underlying: Ordinary Shares · 4,702 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant.

SEC source: 0001179110-21-001976 · edgar.xml · nonDerivative · entry 1

Lanning Andre · CIK 0001810969 · VP, Strategy, Corp Dev & Mktg

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,580

F1 · shares: Represents ordinary Shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001977 · edgar.xml · derivative · entry 2

Joly Nicolas · CIK 0001810986 · VP, Plastics & Feedstocks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,310

Underlying: Ordinary Shares · 4,310 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001977 · edgar.xml · nonDerivative · entry 1

Joly Nicolas · CIK 0001810986 · VP, Plastics & Feedstocks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,445

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001980 · edgar.xml · derivative · entry 2

Skeete Bernard M · CIK 0001781229 · VP, CAO and Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,150

Underlying: Ordinary Shares · 2,150 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001980 · edgar.xml · nonDerivative · entry 1

Skeete Bernard M · CIK 0001781229 · VP, CAO and Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,340

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest full on the third anniversary of the grant date.

SEC source: 0001179110-21-001984 · edgar.xml · derivative · entry 2

HEEZEN ALICE · CIK 0001736490 · SVP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,450

Underlying: Ordinary Shares · 6,450 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001984 · edgar.xml · nonDerivative · entry 1

HEEZEN ALICE · CIK 0001736490 · SVP - Human Resources

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,882

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001981 · edgar.xml · derivative · entry 2

Stasse David Phillip · CIK 0001441657 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,859

Underlying: Ordinary Shares · 11,859 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001981 · edgar.xml · nonDerivative · entry 1

Stasse David Phillip · CIK 0001441657 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,953

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001987 · edgar.xml · derivative · entry 2

Chaclas Angelo N. · CIK 0001629821 · SVP, CLO, CCO & Corp. Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,992

Underlying: Ordinary Shares · 8,992 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001987 · edgar.xml · nonDerivative · entry 1

Chaclas Angelo N. · CIK 0001629821 · SVP, CLO, CCO & Corp. Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,680

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001985 · edgar.xml · derivative · entry 2

Thomas Timothy J · CIK 0001790892 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,421

Underlying: Ordinary Shares · 3,421 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001985 · edgar.xml · nonDerivative · entry 1

Thomas Timothy J · CIK 0001790892 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,567

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001983 · edgar.xml · derivative · entry 2

BOZICH FRANK A · CIK 0001660737 · Director · CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,753

Underlying: Ordinary Shares · 46,753 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001983 · edgar.xml · nonDerivative · entry 1

BOZICH FRANK A · CIK 0001660737 · Director · CEO and President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,396

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant.

SEC source: 0001179110-21-001982 · edgar.xml · derivative · entry 2

Leib Ryan J · CIK 0001659260 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,195

Underlying: Ordinary Shares · 2,195 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001982 · edgar.xml · nonDerivative · entry 1

Leib Ryan J · CIK 0001659260 · Vice President and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,149

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest on the third anniversary of the grant date.

SEC source: 0001179110-21-001979 · edgar.xml · derivative · entry 2

Ni James Mingyu · CIK 0001822107 · VP, Latex Binders

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,002

Underlying: Ordinary Shares · 4,002 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001979 · edgar.xml · nonDerivative · entry 1

Ni James Mingyu · CIK 0001822107 · VP, Latex Binders

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,509

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary of the grant date.

SEC source: 0001179110-21-001975 · edgar.xml · derivative · entry 2

Schewe Rainer · CIK 0001661138 · VP, Supply Chain Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,470

Underlying: Ordinary Shares · 3,470 shares

Expires 2030-02-17

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001179110-21-001975 · edgar.xml · nonDerivative · entry 1

Schewe Rainer · CIK 0001661138 · VP, Supply Chain Services

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,116

F1 · shares: Represents ordinary shares issuable pursuant to RSU award that will vest in full on the third anniversary grant date.

SEC source: 0001567619-21-004184 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,714,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,518,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-004184 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,717,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,518,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-003357 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,720,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,524,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-002539 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,722,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,526,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-002380 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,725,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,529,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-001933 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,728,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,532,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-001695 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,731,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,535,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-001358 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,733,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,537,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-001052 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,736,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,540,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000957 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,739,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,543,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000957 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,742,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,543,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000899 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,745,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,549,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000698 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,747,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,551,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000698 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,752,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,551,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000465 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,757,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,561,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-21-000465 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,762,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,561,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-021577 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,765,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,569,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-021325 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,768,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,572,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-021027 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,771,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,575,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-020676 · doc1.xml · nonDerivative · entry 2

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,774,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,578,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-020676 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,777,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,578,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001567619-20-020641 · doc1.xml · nonDerivative · entry 1

M&G INVESTMENT MANAGEMENT LTD · CIK 0000922898 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Please see footnote

Disclosed balance after: 7,780,044

F1 · ownership.nature: The reported securities are held directly by certain funds advised by M&G Investment Management Limited, (i) M&G (Lux) Investment Funds 1 holds 2,584,620 ordinary shares in Trinseo S.A.; (ii) M&G Global Dividend Fund directly holds 3,615,353 ordinary shares in Trinseo S.A.; and (iii) LF Access Global Dividend Fund directly holds 1,580,071 ordinary shares in Trinseo S.A. The reported securities may be deemed beneficially owned for the purposes of Section 13(d) of the Securities Exchange Act 1934 by M&G Investment Management Limited as investment manager to these funds. The Reporting Person disclaims beneficial ownership of the securities for purposes of Rule 16a-1(a) (2) and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.