United Kingdom Chemicals

Synthomer PLC (SYNT)

Track

Track

Synthomer PLC has seen no insider activity within the last three months. The most recent recorded transaction occurred on August 7, 2025, when a non-executive director purchased shares. Prior to this, significant buying patterns were observed throughout October 2023 involving multiple board members and associated persons.
Ticker: SYNT Exchange: LSE
Preparing chart...
Download chart Copy chart image Copy link Share to X Share


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Upgrade for signal details

Upgrade to see score, net flow, insiders and context.

Upgrade to see full signal details →

Insider trades have triggered activity signals for Synthomer PLC. Upgrade to see score, net flow, insiders and the full signal context.

Open in Activity Signals screener →
Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Uwe Halder Non-Executive Director Executive Director
Transaction date
Purchase
Price
279.40
Quantity 97,149
Value £3,383,380
Alexander Catto Non-Executive Director Executive Director
Transaction date
Sale
Price
174.16
Quantity 89,311
Value £4,127,328
Alexander Catto Non-Executive Director Executive Director
Transaction date
Purchase
Price
191.07
Quantity 9,060
Value £3,410,507
1.3
Holly Van Deursen Non-Executive Director Executive Director
Transaction date
Purchase
Price
1.85
Quantity 10,000
Value £18,500
2.1
Lily Liu Chief Financial Officer Officer
Transaction date
Purchase
Price
2.05
Quantity 20,000
Value £41,000
1.3
Holly A. Van Deursen Independent Non-executive Director Non-Executive Director
Transaction date
Purchase
Price
1.97
Quantity 12,000
Value £23,640
Roberto Gualdoni Independent Non-executive Director Non-Executive Director
Transaction date
Purchase
Price
1.97
Quantity 20,052
Value £39,502
Lee Hau Hian Non-executive Director Executive Director
Transaction date
Purchase
Price
1.97
Quantity 140,232
Value £276,257
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through CairnSea Investments, a closely affiliated person
Transaction date
Purchase
Price
1.97
Quantity 50,000
Value £98,500
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through Schivas Estates Ltd, a closely affiliated person
Transaction date
Purchase
Price
1.97
Quantity 26,303
Value £51,817
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through SG Catto Charitable Trust, a closely affiliated person
Transaction date
Purchase
Price
1.97
Quantity 158,921
Value £313,074
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through Crescent Trustees, a closely affiliated person
Transaction date
Purchase
Price
1.97
Quantity 30,000
Value £59,100
Elizabeth Catto PCA to the Hon Alexander Catto (PDMR)
Through Hon Alexander Catto, a closely affiliated person
Transaction date
Purchase
Price
1.97
Quantity 8,664
Value £17,068
Alexander Catto Non-executive Director Executive Director
Transaction date
Purchase
Price
1.97
Quantity 118,820
Value £234,075
2.1
Lily Liu Chief Financial Officer Officer
Transaction date
Purchase
Price
1.97
Quantity 6,696
Value £13,191
Michael Willome Chief Executive Officer Officer
Transaction date
Purchase
Price
1.97
Quantity 54,000
Value £106,380
3.7
Caroline Johnstone Chair Director
Transaction date
Purchase
Price
1.97
Quantity 39,376
Value £77,571
Elizabeth Catto PCA to the Hon Alexander Catto (PDMR)
Through Hon Alexander Catto, a closely affiliated person
Transaction date
Sale
Price
0.19
Quantity 18,020
Value £3,435
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through SG Catto Charitable Trust, a closely affiliated person
Transaction date
Sale
Price
0.19
Quantity 318,381
Value £60,683
1.2
Hon Alexander Catto PCA to the Hon Alexander Catto (PDMR)
Through Schivas Estates Ltd, a closely affiliated person
Transaction date
Purchase
Price
0.19
Quantity 89,977
Value £17,150
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-08-11 2025-08-07 B Purchase Uwe Halder

Non-Executive Director

Executive Director
97,149
279.40
£3,383,380 		97,149 279.40 £3,383,380
2023-11-03 2023-10-30 S Sale Alexander Catto

Non-Executive Director

Executive Director
89,311
174.16
£4,127,328 		89,311 174.16 £4,127,328
2023-11-03 2023-10-30 B Purchase Alexander Catto

Non-Executive Director

Executive Director
9,060
191.07
£3,410,507 		9,060 191.07 £3,410,507
2023-10-23 2023-10-20 B Purchase
1.3
Holly Van Deursen

Non-Executive Director

Executive Director
10,000
1.85
£18,500 		10,000 1.85 £18,500
2023-10-17 2023-10-16 B Purchase
2.1
Lily Liu

Chief Financial Officer

Officer
20,000
2.05
£41,000 		20,000 2.05 £41,000
2023-10-18 2023-10-13 B Purchase
1.3
Holly A. Van Deursen

Independent Non-executive Director

Non-Executive Director
12,000
1.97
£23,640 		12,000 1.97 £23,640
2023-10-18 2023-10-13 B Purchase Roberto Gualdoni

Independent Non-executive Director

Non-Executive Director
20,052
1.97
£39,502 		20,052 1.97 £39,502
2023-10-18 2023-10-13 B Purchase Lee Hau Hian

Non-executive Director

Executive Director
140,232
1.97
£276,257 		140,232 1.97 £276,257
2023-10-18 2023-10-13 B Purchase
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through CairnSea Investments, a closely affiliated person
50,000
1.97
£98,500 		50,000 1.97 £98,500
2023-10-18 2023-10-13 B Purchase
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through Schivas Estates Ltd, a closely affiliated person
26,303
1.97
£51,817 		26,303 1.97 £51,817
2023-10-18 2023-10-13 B Purchase
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through SG Catto Charitable Trust, a closely affiliated person
158,921
1.97
£313,074 		158,921 1.97 £313,074
2023-10-18 2023-10-13 B Purchase
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through Crescent Trustees, a closely affiliated person
30,000
1.97
£59,100 		30,000 1.97 £59,100
2023-10-18 2023-10-13 B Purchase Elizabeth Catto

PCA to the Hon Alexander Catto (PDMR)

Through Hon Alexander Catto, a closely affiliated person
8,664
1.97
£17,068 		8,664 1.97 £17,068
2023-10-18 2023-10-13 B Purchase Alexander Catto

Non-executive Director

Executive Director
118,820
1.97
£234,075 		118,820 1.97 £234,075
2023-10-18 2023-10-13 B Purchase
2.1
Lily Liu

Chief Financial Officer

Officer
6,696
1.97
£13,191 		6,696 1.97 £13,191
2023-10-18 2023-10-13 B Purchase Michael Willome

Chief Executive Officer

Officer
54,000
1.97
£106,380 		54,000 1.97 £106,380
2023-10-18 2023-10-13 B Purchase
3.7
Caroline Johnstone

Chair

Director
39,376
1.97
£77,571 		39,376 1.97 £77,571
2023-10-16 2023-10-10 S Sale Elizabeth Catto

PCA to the Hon Alexander Catto (PDMR)

Through Hon Alexander Catto, a closely affiliated person
18,020
0.19
£3,435 		18,020 0.19 £3,435
2023-10-16 2023-10-10 S Sale
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through SG Catto Charitable Trust, a closely affiliated person
318,381
0.19
£60,683 		318,381 0.19 £60,683
2023-10-16 2023-10-10 B Purchase
1.2
Hon Alexander Catto

PCA to the Hon Alexander Catto (PDMR)

Through Schivas Estates Ltd, a closely affiliated person
89,977
0.19
£17,150 		89,977 0.19 £17,150
Explore more

More insider trading research around Synthomer PLC

More insider trades in United Kingdom
Similar Basic Materials companies with insider activity
More Chemicals companies with insider activity
More Chemicals companies with insider activity
Insider trading in Europe