Diffusion Engineers Limited — Regulatory Filings 2025

Nov 26, 2025

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Date: November 26, 2025

To, To, The Manager The Manager Listing Department Corporate Relationship Department National Stock Exchange of India Limited BSE Limited Exchange Plaza, Plot No. C/1, G Block Floor 25, Phiroze Jeejeebhoy Towers, Bandra Kurla Complex Dalal Street, Bandra (East), Mumbai - 400 001 Mumbai - 400 051 BSE Scrip Code - 544264 NSE Symbol: DIFFNKG

Dear Sir/Madam,

Subject.: Intimation under Regulation 7(2)(b) of the SEBI (Prohibition of Insider Trading) Regulations, 2015

Please find enclosed disclosure in Form- C pursuant to Regulation 7(2)(a) read with Regulation 6(2) of the SEBI (Prohibition of Insider Trading) Regulations, 2015 with respect to intimation received on November 26, 2025 from Diffusion ESOP Trust (Trust formed under Diffusion Engineers Limited - Employee Stock Option Scheme 2025), about acquisition of 6,041 Equity Shares of the Company.

We request you to treat this intimation as compliance with Regulation 7(2)(b) of the SEBI (Prohibition of Insider Trading) Regulations, 2015 and take the same on record.

Thanking You, For Diffusion Engineers Limited

Chanchal Digitally signed by Chanchal Rajesh Jaiswal Rajesh Jaiswal Date: 2025.11.26 16:32:16 +05'30'

Chanchal Jaiswal Company Secretary and Compliance Officer ICSI Membership No.: A67136

Enclosed as above

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DIFFUSION ESOP TRUST

Reg, Add: T-5 & 6, MIDC, Hingna Industrial Area, Nagpur, Maharashtra, India, 440038

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November 26, 2025

To, The Compliance Officer Diffusion Engineers Limited

Address : T-5 & 6, MIDC, Hingna Industrial Area, Nagpur, Maharashtra, India, 440038.

Sub: Disclosure under Regulation 7(2) read with Regulation 6(2) of SEBI (Prohibition of Insider Trading) Regulations, 2015

Dear Sir/Madam,

Refer to the aforesaid subject, attached please find duly executed Form – C for the acquisition of equity shares of Diffusion Engineers Limited (‘the Company’) through Stock Exchanges between November 24, 2025 to November 24, 2025 for your necessary action.

After the aforesaid transaction Trustee for Diffusion ESOP Trust holds 6041 equity shares at face value of Rs. 10/- each constituting 0.02% of the paid-up equity shares capital of the Company.

You are requested to take note of the above.

Thanking you,

Yours faithfully,

For Diffusion ESOP Trust

RAHUL Digitally signed by RAHUL SOMANI SOMANI Date: 2025.11.26 16:13:34 +05'30'

Mr. Rahul Somani Authorised Signatory

Encl: as above

FORM C

Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 [Regulation 7 (2) read with Regulation 6(2) – Continual disclosure]

Name of the company: Diffusion Engineers Limited ISIN of the company: INE184O01015

Details of change in holding of Securities of Promoter, Employee or Director of a listed company and other such persons as mentioned in Regulation 6(2).

Name, PAN No., CIN/DIN & Address with contact nos.	Category of Person (Promoter s / KMP /Directors / immediat e Relatives /others etc.)		Securities held prior to acquisitio~~n/~~ ~~disposal~~	Securities held prior to acquisitio~~n/~~ ~~disposal~~	Securities acquired	Securities acquired	~~/Disosed~~			Securities held post acquisitio~~n/disposal~~	Securities held post acquisitio~~n/disposal~~	Securities held post acquisitio~~n/disposal~~		Date of ~~advice/~~	Date of ~~advice/~~	Date of intimation to company		Mode of acquisitio~~n/di~~ ~~sposal~~(on Market/public / rights/prefere ntial offer / off market/ Inter- se transfer, ESOPs etc.)
							~~p~~
														specify
			Type of security (For eg. – Shares, Warrants, Convertibl e Debentur es etc.)	No. and % of share holdin g	Type of security (For eg.- Shares, Warrants, Convertible Debentures etc.)	No.		Value	Transac t ion Type (Buy/ Sale/ Pledge / Revoke/ Invoke)	Type of security (For eg.– Shares, Warrants, Convertibl e Debentur es etc.)		No. and % of shareholdi ng		From	To
Diffusion ESOP TRUST PAN:, AAFTD1699D Address : - T-5 & 6, MIDC, Hingana, Nagpur, Maharashtra, India, 440038. Cont No. 8956787343	Employee s Welfare Trust		Equity Shares	0.00(0 .00%)	Equity Shares	6041(0.02% )		1844226.94	Buy	Equity Shares		6041(0.02 %)		24/11/2025	24/11/2025	26/11/2025		Purchase through Stock Exchange (NSE)

Details of trading in derivatives of the company by Promoter, Employee or Director of a listed company and other such persons as mentioned in Regulation 6(2).

Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Tradingin derivatives(Specifytype of contract,Futures or Options etc)	Exchange on which the trade was executed
Type of Contract	Contract Specifications	Buy		Sell
		Notional Value	Number of units (contracts * lot size)	Notional Value	Number of units (contracts * lot size)
		Not Applicable

Note: In case of Options, notional value shall be calculated based on Premium plus strike price of options.

Trustee for Diffusion ESOP Trust

RAHUL Digitally signed by RAHUL SOMANI SOMANI Date: 2025.11.26 16:14:37 +05'30'

Mr. Rahul Somani Authorised Signatory Date:26.11.2025 Place: Nagpur