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# Sisir Radar

Sisir Radar is an Indian private space company in payloads and components, based in Kolkata. Designs synthetic aperture radar payloads for drone, airborne and space platforms, and is building an L-band SAR satellite.

- Total raised (tracked rounds)US$8.5M2 rounds; amounts as reported
- Last roundUS$7M15 Dec 2025 · Series A
- Investors42 as lead

## Timeline

- 15 Dec 2025Raised US$7M (Series A), led by 360 ONE Asset. [etvbharat.com](https://www.etvbharat.com/en/technology/deep-tech-startup-sisir-radar-secures-7-dollars-million-in-funding-enn25121502697)
- 28 Feb 2025Raised US$1.5M (Seed), led by Shastra VC. [news.ventureintelligence.com](https://news.ventureintelligence.com/private-equity/spacetech-startup-sisir-radar-bags-%241.5-m-from-shastra-vc%2C-riverwalk%2C-invstt)
- 2022Founded. [etvbharat.com](https://www.etvbharat.com/en/technology/deep-tech-startup-sisir-radar-secures-7-dollars-million-in-funding-enn25121502697)

## Funding rounds

| Date | Amount | Stage | Lead investors | Other investors | Source |
| --- | --- | --- | --- | --- | --- |
| 15 Dec 2025 | US$7M | Series A | 360 ONE Asset | Shastra VC | [etvbharat.com](https://www.etvbharat.com/en/technology/deep-tech-startup-sisir-radar-secures-7-dollars-million-in-funding-enn25121502697) |
| 28 Feb 2025 | US$1.5M | Seed | Shastra VC | Riverwalk Holdings, INVSTT | [news.ventureintelligence.com](https://news.ventureintelligence.com/private-equity/spacetech-startup-sisir-radar-bags-%241.5-m-from-shastra-vc%2C-riverwalk%2C-invstt) |

## Investors

- 360 ONE Asset Lead
- Shastra VC Lead
- INVSTT
- Riverwalk Holdings

## Facts

- **Segment**: [Payloads and components](https://indiaspaceindex.com/segments/#payloads-components)
- **Headquarters**: Kolkata, West Bengal
- **Founded**: 2022
- **Founders**: Tapan Misra, Soumya Misra, Urmi Bhambhani
- **Website**: [sisirradar.com](https://sisirradar.com/)
- **IN-SPACe**: Not on the government list of authorised startups (13 Aug 2026)

Full profile: 8 sourced facts so far. Last verified 21 Oct 2026.

## Sources

- [etvbharat.com](https://www.etvbharat.com/en/technology/deep-tech-startup-sisir-radar-secures-7-dollars-million-in-funding-enn25121502697)
- [india.entrepreneur.com](https://india.entrepreneur.com/?p=91515)
- [news.ventureintelligence.com](https://news.ventureintelligence.com/private-equity/spacetech-startup-sisir-radar-bags-%241.5-m-from-shastra-vc%2C-riverwalk%2C-invstt)
- [programs.t-hub.co](https://programs.t-hub.co/aws-selected-startups/)

Work at Sisir Radar? Confirm or correct this profile: email [corrections@indiaspaceindex.com](mailto:corrections@indiaspaceindex.com?subject=Profile%3A%20Sisir%20Radar) with sources.

## Cite this page

India Space Index. “Sisir Radar.” https://indiaspaceindex.com/companies/sisir-radar/. Last updated 21 Oct 2026.

Free to reuse under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) with attribution. Each row links to its original source; please cite that too.

Last updated 21 Oct 2026.

Source page: https://indiaspaceindex.com/companies/sisir-radar/