United Kingdom Machinery, Equipment & Components

Haydale Graphene Industries PLC (HAYD)

Track

Track

The most recent insider trading activity at Haydale Graphene Industries PLC occurred on April 7, 2026, when Chief Commercial Officer Mark Sait purchased shares. This follows a series of acquisitions by various executives throughout early 2026. These transactions represent the latest recorded movements by company leadership regarding their equity holdings.
Ticker: HAYD Exchange: LSE
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Haydale Graphene Industries PLC. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
3.2
Mark Sait Chief Commercial Officer Officer
Transaction date
Purchase
Price
10.11
Quantity 54,443
Value £323,241
3.2
Mark Sait Chief Commercial Officer Officer
Transaction date
Purchase
Price
420.86
Quantity 7,129
Value £3,289,808
3.2
Mark Sait Chief Commercial Officer Officer
Transaction date
Purchase
Price
369.28
Quantity 32,894
Value £262,405
0.5
Theresa Wallis Non-executive Director Executive Director
Transaction date
Purchase
Price
0.01
Quantity 2,000,000
Value £10,000
3.1
Simon Turek Chief Executive Officer Officer
Transaction date
Purchase
Price
0.01
Quantity 39,200,000
Value £196,000
0.5
Theresa Wallis Non-Executive Director Executive Director
Transaction date
Purchase
Price
0.01
Quantity 1,000,000
Value £5,000
Patrick Carter Chief Financial Officer Officer
Transaction date
Purchase
Price
0.01
Quantity 1,000,000
Value £5,000
1.0
Keith Broadbent Chief Executive Officer Officer
Transaction date
Purchase
Price
0.01
Quantity 3,000,000
Value £15,000
2.7
David Banks Non-Executive Chair Director
Transaction date
Purchase
Price
0.01
Quantity 3,000,000
Value £15,000
2.7
David Banks Non-Executive Chairman Director
Transaction date
Purchase
Price
0.02
Quantity 735,585
Value £14,197
2.7
David Banks Non-Executive Chair Director
Transaction date
Purchase
Price
0.02
Quantity 1,014,415
Value £20,288
Jonathan Mark Chapman Chief Financial Officer Officer
Transaction date
Sale
Price
0.00
Quantity 285,714
Value £126
Jonathan Mark Chapman Chief Financial Officer Officer
Transaction date
Sale
Price
0.00
Quantity 285,714
Value £126
2.7
David Banks Chairman Director
Transaction date
Purchase
Price
0.01
Quantity 1,000,000
Value £14,413
2.4
Mark Chapman CFO Officer
Transaction date
Purchase
Price
0.02
Quantity 275,000
Value £4,812
2.7
David Banks Chairman Director
Transaction date
Purchase
Price
0.02
Quantity 700,000
Value £11,207
2.3
Raymond John Gibbs Director of Haydale Technologies Taiwan Co., Ltd, Haydale Technologies Korea Co., Ltd and Haydale Technologies Thailand Co., Ltd Executive Director
Transaction date
Sale
Price
0.02
Quantity 413,500
Value £7,236
1.5
David Doidge Non-executive Chairman Director
Through Richard Banks, a closely affiliated person
Transaction date
Purchase
Price
0.02
Quantity 500,000
Value £10,000
1.5
David Doidge Non-executive Chairman Director
Through Richard Banks, a closely affiliated person
Transaction date
Sale
Price
0.02
Quantity 500,000
Value £9,838
1.0
Roger Humm Non-executive Director Executive Director
Transaction date
Purchase
Price
0.02
Quantity 841,432
Value £16,829
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-04-08 2026-04-07 B Purchase
3.2
Mark Sait

Chief Commercial Officer

Officer
54,443
10.11
£323,241 		54,443 10.11 £323,241
2026-01-09 2026-01-08 B Purchase
3.2
Mark Sait

Chief Commercial Officer

Officer
7,129
420.86
£3,289,808 		7,129 420.86 £3,289,808
2026-01-09 2026-01-07 B Purchase
3.2
Mark Sait

Chief Commercial Officer

Officer
32,894
369.28
£262,405 		32,894 369.28 £262,405
2026-01-09 2026-01-07 B Purchase
0.5
Theresa Wallis

Non-executive Director

Executive Director
2,000,000
0.01
£10,000 		2,000,000 0.01 £10,000
2026-01-09 2026-01-07 B Purchase
3.1
Simon Turek

Chief Executive Officer

Officer
39,200,000
0.01
£196,000 		39,200,000 0.01 £196,000
2023-10-05 2023-10-05 B Purchase
0.5
Theresa Wallis

Non-Executive Director

Executive Director
1,000,000
0.01
£5,000 		1,000,000 0.01 £5,000
2023-10-05 2023-10-05 B Purchase
Patrick Carter

Chief Financial Officer

Officer
1,000,000
0.01
£5,000 		1,000,000 0.01 £5,000
2023-10-05 2023-10-05 B Purchase
1.0
Keith Broadbent

Chief Executive Officer

Officer
3,000,000
0.01
£15,000 		3,000,000 0.01 £15,000
2023-10-05 2023-10-05 B Purchase
2.7
David Banks

Non-Executive Chair

Director
3,000,000
0.01
£15,000 		3,000,000 0.01 £15,000
2022-09-16 2022-09-15 B Purchase
2.7
David Banks

Non-Executive Chairman

Director
735,585
0.02
£14,197 		735,585 0.02 £14,197
2022-09-15 2022-09-14 B Purchase
2.7
David Banks

Non-Executive Chair

Director
1,014,415
0.02
£20,288 		1,014,415 0.02 £20,288
2022-03-01 2022-03-01 S Sale
Jonathan Mark Chapman

Chief Financial Officer

Officer
285,714
0.00
£126 		285,714 0.00 £126
2022-03-01 2022-03-01 S Sale
Jonathan Mark Chapman

Chief Financial Officer

Officer
285,714
0.00
£126 		285,714 0.00 £126
2020-03-13 2020-03-12 B Purchase
2.7
David Banks

Chairman

Director
1,000,000
0.01
£14,413 		1,000,000 0.01 £14,413
2020-03-12 2020-03-11 B Purchase
2.4
Mark Chapman

CFO

Officer
275,000
0.02
£4,812 		275,000 0.02 £4,812
2020-03-09 2020-03-09 B Purchase
2.7
David Banks

Chairman

Director
700,000
0.02
£11,207 		700,000 0.02 £11,207
2019-08-21 2019-08-19 S Sale
2.3
Raymond John Gibbs

Director of Haydale Technologies Taiwan Co., Ltd, Haydale Technologies Korea Co., Ltd and Haydale Technologies Thailand Co., Ltd

Executive Director
413,500
0.02
£7,236 		413,500 0.02 £7,236
2019-04-16 2019-04-12 B Purchase
1.5
David Doidge

Non-executive Chairman

Through Richard Banks, a closely affiliated person Director
500,000
0.02
£10,000 		500,000 0.02 £10,000
2019-04-16 2019-04-12 S Sale
1.5
David Doidge

Non-executive Chairman

Through Richard Banks, a closely affiliated person Director
500,000
0.02
£9,838 		500,000 0.02 £9,838
2019-03-14 2019-03-13 B Purchase
1.0
Roger Humm

Non-executive Director

Executive Director
841,432
0.02
£16,829 		841,432 0.02 £16,829
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