Diffusion Engineers Limited — Major Shareholding Notification 2026

Apr 30, 2026

Great Place
Work.
Certified
Director of
the Quality Management
System

DIFFUSION
Innovative superconducting solutions

Date: April 03, 2026

To,
The Manager
Listing Department
National Stock Exchange of India Limited
Exchange Plaza, Bandra Kurla Complex
Bandra (East),
Mumbai - 400 051
NSE Symbol: DIFFNKG

To,
The Manager
Corporate Relationship Department
BSE Limited
Floor 25, Phiroze Jeejeebhoy Towers,
Dalal Street,
Mumbai - 400 001
BSE Scrip Code - 544264

Subject: Forwarding Yearly Disclosure under Regulation 31(4) of SEBI (SAST) Regulations, 2011 by the Promoter and Promoter Group along with person acting in concert of the Company for the Financial year ended on 31st March, 2026.

Dear Sir/Madam,

Please find enclosed the yearly disclosure under Regulation 31(4) of SEBI (Substantial Acquisition of Shares and Takeover) Regulations, 2011 as amended, received from the Promoter and Promoters Group of the Company for the year ended on 31st March, 2026 for your kind perusal and records.

Thanking you,
Yours Faithfully,

For DIFFUSION ENGINEERS LIMITED

Chanchal
Rajesh Jaiswal
Digitally signed by
Chanchal Rajesh Jaiswal
Date: 2026.04.03
12:28:15 +03'30'

Chanchal Jaiswal
Company Secretary & Compliance Officer
(Membership no. A67136)

Enclosed as above

IMS CERTIFIED COMPANY
TÜV SÜD
CERTIFIED
DIFFUSION ENGINEERS LIMITED
Regd. Office : T-5 & 6, M.I.D.C., Hingna Industrial Area, Nagpur - 440 016, Maharashtra, INDIA
[t] 091-7104-232890, 234727, 236772, CIN : L99999MH2000PLC124154
[e] info@diffusionengineers.com, [w] www.diffusionengineers.com GSTIN : 27AAACD8008L1ZK
Branches At : Ahmedabad • Chennai • Chittorgarh • Faridabad • Jamshedpur • Kolkata • Pune • Raipur • Secunderabad

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Prashant Garg
E-mail - prashantgarg@diffusionengineers.com
Contact No. - +91- 9823104349
Address - 3, Chaitriya, Pawanbhumi
Somalwada, Nagpur440025

Date: 03-04-2026

To,
The Manager
Listing Department
National Stock Exchange of India Limited
Exchange Plaza, Bandra Kurla Complex
Bandra (East),
Mumbai - 400 051
NSE Symbol: DIFFNKG
E-mail: takeover@nse.co.in

To,
The Manager
Corporate Relationship Department
BSE Limited
Floor 25, Phiroze Jeejeebhoy Towers,
Dalal Street,
Mumbai - 400 001
BSE Scrip Code - 544264
Email: corp.relations@bseindia.com

To,
The Company Secretary,
Diffusion Engineers Limited
T/5/6, MIDC, Hingna,
Industrial Area, Nagpur 440016
E mail - cs@diffusionengineers.com

Dear Sir/Madam,

Subject: Declaration under Regulation 31(4) of SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011.

In terms of Regulation 31(4) of SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011, we the individuals and entities belonging to promoter and promoter group, including Persons acting in concert (listed in annexure A) of Diffusion Engineers Limited, the target company hereby declare that we have not made, created any encumbrance of shares, directly or indirectly at any time during the financial year ended March 31, 2026.

This is for your information and record

Thank you,
On behalf of Promoter and Promoter Group
Prashant Garg
Digitally signed
by Prashant Garg
Date: 2026.04.03
12:24:06 +05'30'

Prashant Garg
Authorised Signatory for
Promoter & Promoter Group
Diffusion Engineers Limited.

---

Prashant Garg

E-mail - prashantgarg@diffusionengineers.com

Contact No. - +91- 9823104349

Address - 3, Chaitriya, Pawanbhumi

Somalwada, Nagpur440025

Annexure A

Promoter and Promoter Group of Diffusion Engineers Limited

Sr. No	Type	Name
1	Promoter	Prashant Garg
2	Promoter	Dr. Nitin Garg
3	Promoter	Ms. Chitra Garg
4	Promoter Group	Diffusion Super Conditioning Services Private Limited
5	Promoter Group	Diffusion Hernon Adhesive and Sealant Private Limited
6	Promoter Group	Nowelco Industries Private Limited
7	Promoter Group	Diffusion Engineers Singapore Pte Ltd
8	Promoter Group	Diffusion Wear Solutions Philippines Inc
9	Promoter Group	Diffusion Eurasia Mühendislik Sanayi Ve Ticaret Anonim Şirketi
10	Promoter Group	Mecdiff SDN BHD
11	Promoter Group	LSN Diffusion Limited
12	Promoter Group	Neelu Prashant Garg
13	Promoter Group	Viraj Prashant Garg
14	Promoter Group	Kabir Prashant Garg
15	Promoter Group	Tikamdas Rupchand Chhabrani
16	Promoter Group	Mohini Tikamdas Chhabrani
17	Promoter Group	Sunil Tikamdas Chhabrani
18	Promoter Group	Kamal Tikamdas Chhabrani
19	Promoter Group	Vinod Tikamdas Chhabrani
20	Promoter Group	Dr Renuka Nitin Garg
21	Promoter Group	Rijul Nitin Garg
22	Promoter Group	Ranveer Nitin Garg
23	Promoter Group	Jagdish Chander Vohra
24	Promoter Group	Ranjit Tripti Singh Vohra
25	Promoter Group	Rajneesh Jagdish Vohra
26	Promoter Group	Vinay Jagdish Vohra
27	Promoter Group	Sumant Kumar Gupta
28	Promoter Group	Neelam Gupta
29	Promoter Group	Madhu Gupta
30	Promoter Group	Vinod Kumar Garg
31	Promoter Group	Kalpana Devi Singhal
32	Promoter Group	Kamlesh Kumar Singh
33	Promoter Group	Sarita Devi Singhla
34	Promoter Group	Cenos Health Care Private Limited
35	Promoter Group	BTSG Awareness Foundation
36	Promoter Group	N.K. Garg HUF
37	Promoter Group	NK Garg Foundation

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38	Promoter Group	Benvira Forward Algorithms Private Limited
39	Promoter Group	Devi Kiran Advisory Services LLP
40	Promoter Group	The 21st Century Builders & Engineers
41	Promoter Group	M/S. 21st Century Steel Structure Private Limited
42	Promoter Group	Desi Rang
43	Promoter Group	R L Fruit Co
44	Promoter Group	S Kumar Fruits
45	Promoter Group	Diffusion Wear Solutions Middle East for Welding Wire Rods Electrodes and Similar Products Manufacturing LLC – S.P.C

On behalf of Promoter and Promoter Group

Prasha
n t Garg
Digitally signed
by Prashant Garg
Date: 2024.04.03
12:24:23 +05'30'

Prashant Garg
Authorised Signatory for
Promoter & Promoter Group
Diffusion Engineers Limited.