3B BlackBio DX Promoter Sells 400 Shares in Open Market Transactions
3B BlackBio DX Limited disclosed that promoter Mahesh Kumar Upadhyay sold 400 equity shares in two tranches (150 on December 23 and 250 on December 24, 2025) through open market transactions. His shareholding reduced from 24,250 to 23,850 shares, maintaining 0.28% voting rights in the company's ₹8.58 crore equity capital structure.

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3B BlackBio DX Limited (formerly Kilpest India Limited) has received a regulatory disclosure from promoter Mahesh Kumar Upadhyay regarding the sale of equity shares under SEBI regulations. The transaction involved the disposal of 400 equity shares through open market operations conducted over two consecutive days in December 2025.
Transaction Details
The share sale was executed in two separate tranches, with 150 equity shares sold on December 23, 2025, and 250 equity shares sold on December 24, 2025. The disclosure was submitted to BSE Limited and the company on December 24, 2025, in compliance with Regulation 29(2) of SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011.
| Transaction Parameter: | Details |
|---|---|
| Total Shares Sold: | 400 equity shares |
| Sale Dates: | December 23-24, 2025 |
| Mode of Sale: | Open market |
| BSE Scrip Code: | 532067 |
| Tranche 1: | 150 shares (Dec 23) |
| Tranche 2: | 250 shares (Dec 24) |
Shareholding Changes
Prior to the transaction, Mahesh Kumar Upadhyay held 24,250 equity shares carrying voting rights in 3B BlackBio DX Limited. Following the sale of 400 shares, his holding reduced to 23,850 equity shares. The percentage shareholding remains at 0.28% of the company's total voting capital both before and after the transaction.
| Shareholding Details: | Before Sale | After Sale |
|---|---|---|
| Number of Shares: | 24,250 | 23,850 |
| Voting Rights (%): | 0.28% | 0.28% |
| Diluted Capital (%): | 0.28% | 0.28% |
| Percentage Change: | - | 0.005% reduction |
Company Capital Structure
The company's equity share capital structure remained unchanged following the transaction. 3B BlackBio DX Limited maintains its total equity share capital at ₹8.58 crores, comprising 85,82,670 equity shares with a face value of ₹10.00 each. The total diluted share capital also stands at the same level, indicating no outstanding convertible securities or warrants.
Regulatory Compliance
The disclosure demonstrates adherence to SEBI's transparency requirements for substantial shareholding changes. Mahesh Kumar Upadhyay, identified as belonging to the promoter group, fulfilled his regulatory obligations by submitting the required documentation to both BSE Limited and the company's corporate relations department. The disclosure was signed by Whole Time Director Nikhil Kuber Dubey (DIN: 00538049) on behalf of the company.
Historical Stock Returns for 3B BlackBio DX
| 1 Day | 5 Days | 1 Month | 6 Months | 1 Year | 5 Years |
|---|---|---|---|---|---|
| +1.24% | +5.44% | +23.83% | +4.95% | -28.64% | +65.65% |






























