United Kingdom Machinery, Equipment & Components

Diploma PLC (DPLM)

Track

Track

Diploma PLC recorded six buy transactions totaling $304,753 over the past ninety days. Four insiders, including three executives, increased their holdings without any reported sales. This activity follows a 14% stock price appreciation, with shares trading near their 52-week peak ahead of the upcoming November 2026 earnings report.
Ticker: DPLM 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 Diploma 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
3.1
Katie Bickerstaffe Senior Independent Director Non-Executive Director
Transaction date
Purchase
Price
53.91
Quantity 65,425
Value £2,937,077
2.9
Cheri Phyfer Non-Executive Director Executive Director
Transaction date
Purchase
Price
456.01
Quantity 72,139
Value US$1,762,345
3.2
Mandy Gradden Non-Executive Director Executive Director
Transaction date
Purchase
Price
113.69
Quantity 44,186
Value £1,566,188
2.0
Wilson Ng Chief Financial Officer Officer
Transaction date
Purchase
Price
70.66
Quantity 424
Value £29,960
3.1
Katie Bickerstaffe Senior Independent Director Non-Executive Director
Transaction date
Purchase
Price
70.50
Quantity 47
Value £3,314
3.1
Katie Bickerstaffe Senior Independent Director Non-Executive Director
Transaction date
Purchase
Price
70.48
Quantity 133
Value £9,373
3.1
Katie Bickerstaffe Senior Independent Director Non-Executive Director
Transaction date
Purchase
Price
67.30
Quantity 177
Value £11,912
3.7
Ian El-Mokadem Non-Executive Director Executive Director
Transaction date
Purchase
Price
58.20
Quantity 500
Value £29,100
3.4
Geraldine Huse Non-Executive Director Executive Director
Transaction date
Purchase
Price
58.34
Quantity 535
Value £31,212
3.1
Katie Bickerstaffe Senior Independent Director Non-Executive Director
Transaction date
Purchase
Price
59.25
Quantity 251
Value £14,872
3.3
Johnny Thomson Chief Executive Officer Officer
Transaction date
Sale
Price
56.68
Quantity 30,000
Value £1,700,400
3.1
Katie Bickerstaffe Non-Executive Director Executive Director
Transaction date
Purchase
Price
56.45
Quantity 352
Value £19,870
3.7
Ian El-Mokadem Non-Executive Director Executive Director
Transaction date
Purchase
Price
56.15
Quantity 500
Value £28,075
2.0
Wilson Ng Chief Financial Officer Officer
Transaction date
Purchase
Price
53.69
Quantity 410
Value £22,013
2.0
Wilson Ng Acting Chief Financial Officer Officer
Transaction date
Sale
Price
52.59
Quantity 4,446
Value £233,815
3.3
Johnny Thomson Chief Executive Officer Officer
Transaction date
Sale
Price
52.59
Quantity 37,407
Value £1,967,234
3.4
Geraldine Huse Non-Executive Director Executive Director
Transaction date
Purchase
Price
39.97
Quantity 750
Value £29,978
3.5
Chris Davies Chief Financial Officer Officer
Transaction date
Purchase
Price
42.80
Quantity 3,917
Value £167,648
3.1
Katie Bickerstaffe Non-Executive Director Executive Director
Transaction date
Purchase
Price
43.38
Quantity 228
Value £9,891
3.1
Katie Bickerstaffe Non-Executive Director Executive Director
Transaction date
Purchase
Price
43.74
Quantity 477
Value £20,864
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-09-23 2026-09-23 B Purchase
3.1
Katie Bickerstaffe

Senior Independent Director

Non-Executive Director
65,425
53.91
£2,937,077 		65,425 53.91 £2,937,077
2026-09-23 2026-09-21 B Purchase
2.9
Cheri Phyfer

Non-Executive Director

Executive Director
72,139
456.01
US$1,762,345 		72,139 456.01 US$1,762,345
2026-07-20 2026-07-17 B Purchase
3.2
Mandy Gradden

Non-Executive Director

Executive Director
44,186
113.69
£1,566,188 		44,186 113.69 £1,566,188
2026-07-20 2026-07-16 B Purchase
2.0
Wilson Ng

Chief Financial Officer

Officer
424
70.66
£29,960 		424 70.66 £29,960
2026-07-20 2026-07-16 B Purchase
3.1
Katie Bickerstaffe

Senior Independent Director

Non-Executive Director
47
70.50
£3,314 		47 70.50 £3,314
2026-07-20 2026-07-16 B Purchase
3.1
Katie Bickerstaffe

Senior Independent Director

Non-Executive Director
133
70.48
£9,373 		133 70.48 £9,373
2026-05-21 2026-05-20 B Purchase
3.1
Katie Bickerstaffe

Senior Independent Director

Non-Executive Director
177
67.30
£11,912 		177 67.30 £11,912
2026-03-23 2026-03-20 B Purchase
3.7
Ian El-Mokadem

Non-Executive Director

Executive Director
500
58.20
£29,100 		500 58.20 £29,100
2026-03-23 2026-03-19 B Purchase
3.4
Geraldine Huse

Non-Executive Director

Executive Director
535
58.34
£31,212 		535 58.34 £31,212
2026-03-23 2026-03-19 B Purchase
3.1
Katie Bickerstaffe

Senior Independent Director

Non-Executive Director
251
59.25
£14,872 		251 59.25 £14,872
2026-01-16 2026-01-16 S Sale
3.3
Johnny Thomson

Chief Executive Officer

Officer
30,000
56.68
£1,700,400 		30,000 56.68 £1,700,400
2026-01-15 2026-01-14 B Purchase
3.1
Katie Bickerstaffe

Non-Executive Director

Executive Director
352
56.45
£19,870 		352 56.45 £19,870
2026-01-15 2026-01-14 B Purchase
3.7
Ian El-Mokadem

Non-Executive Director

Executive Director
500
56.15
£28,075 		500 56.15 £28,075
2025-12-22 2025-12-19 B Purchase
2.0
Wilson Ng

Chief Financial Officer

Officer
410
53.69
£22,013 		410 53.69 £22,013
2025-11-19 2025-11-18 S Sale
2.0
Wilson Ng

Acting Chief Financial Officer

Officer
4,446
52.59
£233,815 		4,446 52.59 £233,815
2025-11-19 2025-11-18 S Sale
3.3
Johnny Thomson

Chief Executive Officer

Officer
37,407
52.59
£1,967,234 		37,407 52.59 £1,967,234
2025-11-19 2025-03-19 B Purchase
3.4
Geraldine Huse

Non-Executive Director

Executive Director
750
39.97
£29,978 		750 39.97 £29,978
2024-12-23 2024-12-20 B Purchase
3.5
Chris Davies

Chief Financial Officer

Officer
3,917
42.80
£167,648 		3,917 42.80 £167,648
2024-11-20 2024-11-19 B Purchase
3.1
Katie Bickerstaffe

Non-Executive Director

Executive Director
228
43.38
£9,891 		228 43.38 £9,891
2024-11-20 2024-11-19 B Purchase
3.1
Katie Bickerstaffe

Non-Executive Director

Executive Director
477
43.74
£20,864 		477 43.74 £20,864
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