The Exchange has received the disclosure under Regulation 29(2) of SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011 for Dr Somnath Chatterjee

Promoter Stake BuyOwnership Changes View source PDF Explain this filing

SURAKSHA · price

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▲ positive · ▼ negative · ● neutral filings · teal = economic event · numbered = multiple that day (click to pick). Times IST.

Price reactionminutes from the announcement price · days from the prior close

+1.6%Reaction day

₹314.00

prior close

₹314.10

announcement price

After-mkt

timing

Nifty Microcap 250market · in no size index; the smallest one is used+1.2%+0.4% vs market

Healthcare Service Provider peers, median of 24sector+0.1%+1.5% vs sector

On the reaction day the stock moved 0.4 pts more than Nifty Microcap 250 and 1.5 pts more than its Healthcare Service Provider peers, over the same two closes: a difference in percentage points, not a measure of what the filing did.

Minutes after the announcementfrom the announcement price · no benchmark

Stock

-0.6

10m

-0.0

15m

+0.2

30m

-0.4

Sessions after the filingfrom the prior close

StockMarketvs marketSectorvs sector

Reaction day

+1.6+1.2+0.4+0.1+1.5

Next day

+0.0+1.1-1.1-0.2+0.3

+0.5+1.4-0.9-0.8+1.3

+0.0+0.8-0.8-0.5+0.5

+0.3+0.7-0.4-0.8+1.1

-3.3-1.1-2.3-0.4-3.0

-5.1-1.9-3.2-0.2-4.9

15d

-1.9+1.6-3.4-0.0-1.9

+0.3+3.5-3.2-0.4+0.7

-4.1+0.7-4.7-5.7+1.6

-2.5+0.2-2.7-8.0+5.5

UpDownMarket · Nifty Microcap 250Sector · Healthcare Service Provider peers, median of 24Pending

Minute windows have no benchmark: there is no intraday index history to compare against.

AI summary

Dr. Somnath Chatterjee, Promoter, Chairman and Joint Managing Director of Suraksha Diagnostic, has bought 7,800 equity shares of the company through an open market purchase on 18 August 2025. His holding rose from 26,46,968 shares (5.082%) to 26,54,768 shares (5.097%) of the company's equity capital. The filing was made under Regulation 29(2) of SEBI's Takeover Regulations and disclosed to BSE and NSE. The total paid-up equity capital of the company remained unchanged at 5,20,80,758 shares of ₹2 each.

Likely market impact

This is a small, routine purchase by a promoter and signals continued insider confidence in the company, though the size (just 7,800 shares, 0.015% of capital) is too small to materially move the stock price or shift control.