S4 Capital PLC (SFOR) Board of Directors | Ticker | TickerSir Martin Stuart Sorrell Executive Chairman
7 yrs 8 mosAge: 81British
Group Chief Financial Officer and Company Secretary
–
Rupert Faure Walker
Non-Executive Director
–
Daniel Emile Pinto
Non-Executive Director
7 yrs 5 mosAge: 59British,French
Non-Executive Director
6 yrs 5 mosAge: 53American,Chinese
Peter Miles Young
Non-Executive Director
5 yrs 10 mosAge: 71British
Colin Richard Day
Non-Executive Director
3 yrs 9 mosAge: 71British
Nirvik Singh
Non-Executive Director
1 yrsAge: 62Indian
Non-Executive Director
6 mosAge: 60American,British
RR
Rupert Roderick Faure Walker
Director
7 yrs 8 mosAge: 78British
RD
Radhika Dilruha Radhakrishnan Director
1 yrsAge: 55British
RD
Radhika Dilruha Radhakrishnan Secretary
6 mos
| Name | Role | Appointed | Tenure | Nationality |
|---|
Sir Martin Stuart Sorrell | Executive Chairman | 28 Sept 2018 | 7 yrs 8 mos | British |
|
Tenure: 3 yrs 3 mosResigned: 30 Nov 2025
Elizabeth Buchanan
Director
Tenure: 6 yrs 4 mosResigned: 14 Nov 2025
Susan Rachel Prevezer
Director
Tenure: 6 yrs 11 mosResigned: 3 Oct 2025
Mary Margaret Basterfield
Director
Tenure: 3 yrs 4 mosResigned: 1 May 2025
Tenure: 4 yrs 6 mosResigned: 6 Jun 2024
Sir Martin Stuart Sorrell Executive Chairman
7 yrs 8 mosAge: 81British
Group Chief Financial Officer and Company Secretary
–
Rupert Faure Walker
Non-Executive Director
–
Daniel Emile Pinto
Non-Executive Director
7 yrs 5 mosAge: 59British,French
Non-Executive Director
6 yrs 5 mosAge: 53American,Chinese
Peter Miles Young
Non-Executive Director
5 yrs 10 mosAge: 71British
Colin Richard Day
Non-Executive Director
3 yrs 9 mosAge: 71British
Nirvik Singh
Non-Executive Director
1 yrsAge: 62Indian
Non-Executive Director
6 mosAge: 60American,British
RR
Rupert Roderick Faure Walker
Director
7 yrs 8 mosAge: 78British
RD
Radhika Dilruha Radhakrishnan Director
1 yrsAge: 55British
RD
Radhika Dilruha Radhakrishnan Secretary
6 mos
| Name | Role | Appointed | Tenure | Nationality |
|---|
Sir Martin Stuart Sorrell | Executive Chairman | 28 Sept 2018 | 7 yrs 8 mos | British |
|
Tenure: 3 yrs 3 mosResigned: 30 Nov 2025
Elizabeth Buchanan
Director
Tenure: 6 yrs 4 mosResigned: 14 Nov 2025
Susan Rachel Prevezer
Director
Tenure: 6 yrs 11 mosResigned: 3 Oct 2025
Mary Margaret Basterfield
Director
Tenure: 3 yrs 4 mosResigned: 1 May 2025
Tenure: 4 yrs 6 mosResigned: 6 Jun 2024
| Group Chief Financial Officer and Company Secretary |
| Non-Executive Director | – | – | – |
| Non-Executive Director | 24 Dec 2018 | 7 yrs 5 mos | British,French |
| Non-Executive Director | 10 Dec 2019 | 6 yrs 5 mos | American,Chinese |
| Non-Executive Director | 1 Jul 2020 | 5 yrs 10 mos | British |
| Non-Executive Director | 2 Aug 2022 | 3 yrs 9 mos | British |
| Non-Executive Director | 1 May 2025 | 1 yrs | Indian |
| Non-Executive Director | 14 Nov 2025 | 6 mos | American,British |
RR Rupert Roderick Faure Walker | Director | 28 Sept 2018 | 7 yrs 8 mos | British |
RD Radhika Dilruha Radhakrishnan | Director | 1 May 2025 | 1 yrs | British |
RD Radhika Dilruha Radhakrishnan | Secretary | 30 Nov 2025 | 6 mos | – |
Tenure: 4 yrs 11 mosResigned: 6 Jun 2024
Christopher Senné Martin
Director
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Victor Olivier Knaap
Director
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Tenure: 5 yrs 9 mosResigned: 6 Jun 2024
Tenure: 3 yrs 11 mosResigned: 26 Aug 2022
Peter Sung Pyo Kim
Director
Tenure: 3 yrs 6 mosResigned: 16 Jun 2022
Tenure: 3 yrs 6 mosResigned: 16 Jun 2022
Harry Abraham Hyman
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
James Richard Challis Serjeant
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
Rodger David Sargent
Secretary
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
Rodger David Sargent
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
| Name | Role | Appointed | Resigned | Tenure | Nationality |
|---|
| Caroline Kowall | Secretary | 26 Aug 2022 | 30 Nov 2025 | 3 yrs 3 mos | – |
| Elizabeth Buchanan | Director | 12 Jul 2019 | 14 Nov 2025 | 6 yrs 4 mos | Australian |
| Susan Rachel Prevezer | Director | 14 Nov 2018 | 3 Oct 2025 | 6 yrs 11 mos | British |
| Mary Margaret Basterfield | Director | 3 Jan 2022 | 1 May 2025 | 3 yrs 4 mos | British |
| Naoko Okumoto | Director | 10 Dec 2019 | 6 Jun 2024 | 4 yrs 6 mos | Japanese |
| Scott Edward Spirit | Director | 18 Jul 2019 |
| Group Chief Financial Officer and Company Secretary |
| Non-Executive Director | – | – | – |
| Non-Executive Director | 24 Dec 2018 | 7 yrs 5 mos | British,French |
| Non-Executive Director | 10 Dec 2019 | 6 yrs 5 mos | American,Chinese |
| Non-Executive Director | 1 Jul 2020 | 5 yrs 10 mos | British |
| Non-Executive Director | 2 Aug 2022 | 3 yrs 9 mos | British |
| Non-Executive Director | 1 May 2025 | 1 yrs | Indian |
| Non-Executive Director | 14 Nov 2025 | 6 mos | American,British |
RR Rupert Roderick Faure Walker | Director | 28 Sept 2018 | 7 yrs 8 mos | British |
RD Radhika Dilruha Radhakrishnan | Director | 1 May 2025 | 1 yrs | British |
RD Radhika Dilruha Radhakrishnan | Secretary | 30 Nov 2025 | 6 mos | – |
Tenure: 4 yrs 11 mosResigned: 6 Jun 2024
Christopher Senné Martin
Director
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Victor Olivier Knaap
Director
Tenure: 5 yrs 6 mosResigned: 6 Jun 2024
Tenure: 5 yrs 9 mosResigned: 6 Jun 2024
Tenure: 3 yrs 11 mosResigned: 26 Aug 2022
Peter Sung Pyo Kim
Director
Tenure: 3 yrs 6 mosResigned: 16 Jun 2022
Tenure: 3 yrs 6 mosResigned: 16 Jun 2022
Harry Abraham Hyman
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
James Richard Challis Serjeant
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
Rodger David Sargent
Secretary
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
Rodger David Sargent
Director
Tenure: 1 yrs 10 mosResigned: 28 Sept 2018
| Name | Role | Appointed | Resigned | Tenure | Nationality |
|---|
| Caroline Kowall | Secretary | 26 Aug 2022 | 30 Nov 2025 | 3 yrs 3 mos | – |
| Elizabeth Buchanan | Director | 12 Jul 2019 | 14 Nov 2025 | 6 yrs 4 mos | Australian |
| Susan Rachel Prevezer | Director | 14 Nov 2018 | 3 Oct 2025 | 6 yrs 11 mos | British |
| Mary Margaret Basterfield | Director | 3 Jan 2022 | 1 May 2025 | 3 yrs 4 mos | British |
| Naoko Okumoto | Director | 10 Dec 2019 | 6 Jun 2024 | 4 yrs 6 mos | Japanese |
| Scott Edward Spirit | Director | 18 Jul 2019 |
| Christopher Senné Martin | Director | 24 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | American |
| Wesley Ter Haar | Director | 4 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | Dutch |
| Victor Olivier Knaap | Director | 4 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | Dutch |
| Paul David Roy | Director | 28 Sept 2018 | 6 Jun 2024 | 5 yrs 9 mos | British |
| Theresa Dadun | Secretary | 28 Sept 2018 | 26 Aug 2022 | 3 yrs 11 mos | – |
| Peter Sung Pyo Kim | Director | 24 Dec 2018 | 16 Jun 2022 | 3 yrs 6 mos | American |
| Peter Rademaker | Director | 4 Dec 2018 | 16 Jun 2022 | 3 yrs 6 mos | Dutch |
| Harry Abraham Hyman | Director | 16 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
| James Richard Challis Serjeant | Director | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
| Rodger David Sargent | Secretary | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | – |
| Rodger David Sargent | Director | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
| Christopher Senné Martin | Director | 24 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | American |
| Wesley Ter Haar | Director | 4 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | Dutch |
| Victor Olivier Knaap | Director | 4 Dec 2018 | 6 Jun 2024 | 5 yrs 6 mos | Dutch |
| Paul David Roy | Director | 28 Sept 2018 | 6 Jun 2024 | 5 yrs 9 mos | British |
| Theresa Dadun | Secretary | 28 Sept 2018 | 26 Aug 2022 | 3 yrs 11 mos | – |
| Peter Sung Pyo Kim | Director | 24 Dec 2018 | 16 Jun 2022 | 3 yrs 6 mos | American |
| Peter Rademaker | Director | 4 Dec 2018 | 16 Jun 2022 | 3 yrs 6 mos | Dutch |
| Harry Abraham Hyman | Director | 16 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
| James Richard Challis Serjeant | Director | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
| Rodger David Sargent | Secretary | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | – |
| Rodger David Sargent | Director | 14 Nov 2016 | 28 Sept 2018 | 1 yrs 10 mos | British |
