Startup
Atonarp
アトナープ株式会社
#34 in the Japan Top 100 Startups
| Founded / HQ | 2009 · Tokyo |
|---|---|
| Equity raised to date | ¥12.2B “累計1億1,100万米ドル” Company-stated cumulative · as of 2021-05 · Atonarp USD; converted by us at ~¥109.5/$ (May 2021). |
| Last round | 2021-05 · Series D · ¥5.5B 5,000万米ドル |
| Latest public valuation | Not publicly disclosed (we do not estimate) |
| Unicorn | No |
| Website | atonarp.com |
From Japanese sources
Findings from Japanese-language filings, government records, trade press, interviews and job posts, with our English analysis. Items tagged Japanese-only had no English coverage when we checked quickly. Most insightful first.
| 2026-07-29 | Regulatory filingJapanese-onlyInvestor Nipro to book ≈¥3.9B gain selling Atonarp shares to VAT 投資有価証券売却に伴う特別利益の計上見込みに関するお知らせ（ニプロ） VAT Group's ≈CHF110M purchase of Atonarp was announced in English. This Japanese filing adds what one strategic backer made: Nipro expects about ¥3.9B of gains on sales between Aug and Oct 2026. Japanese corporate investors' filings are often the only public data on exit returns. Source: TSE timely disclosure by Nipro (8086) |
|---|---|
| 2025-11-14 | GovernmentJapanese-onlyAtonarp won a ¥422M NEDO deep-tech grant for embedded semiconductor-process sensing NEDOディープテック・スタートアップ支援事業 採択企業：アトナープ株式会社（交付決定額4.22億円） NEDO's ¥422M (FY2025–26) grant funded embedded mass-spec modules and AI analytics developed with Japanese chip-equipment makers. That is the product line VAT bought. Public R&D money helped build the asset sold abroad. Source: NEDO grantee page (updated 14 Nov 2025) |
Overview
Atonarp builds molecular sensing instruments, mass spectrometers and optical sensors, for semiconductor manufacturing and healthcare diagnostics. It was founded in 2009 by Prakash Murthy. A $50M Series D in 2021 took total funding to $111M.
Built from: Series D release
Company timeline
Founded
| Date | 2009-10· Atonarp |
|---|---|
| Founders | Prakash Murthy |
Funding
| Date | Round | Amount | Lead / key investors | Source |
|---|---|---|---|---|
| 2021-05-30 | Series D | $50M; total $111M 累計1億1,100万米ドル | Company release |
Key hires & board
| 2022-07-19 | HireAtonarp appoints Nobel laureate James E. Rothman to its board· Atonarp |
|---|
Milestones
| 2025-08-04 | RecognitionAtonarp selected for NEDO deep-tech startup support programme· Atonarp |
|---|
News
| 2025-12-22 | Year-end holiday notice 年末年始休業期間の· Atonarp |
|---|---|
| 2025-08-04 | Atonarp selected for NEDO deep-tech startup support programme アトナープ、NEDOの「ディープテック・スタートアップ支援事業」に採択されました —この助成金を受け半導体製造プロセス自動化に向けた製品開発を加速します— アトナープ株式会社（本社：東京都港区、代... 詳しく見る· Atonarp |
| 2025-08-04 | Atonarp's India semiconductor market study selected for METI Global South co-creation subsidy アトナープ、 インド／リアルタイム質量分析センサによる半導体製造市場参入調査事業が、経済産業省の令和６年度補正グローバルサウス未来志向型共創等事業費補助金（小規模実証・ＦＳ事業）に採択されました· Atonarp |
| 2023-02-23 | Podcast: Atonarp on the first year of SEMI Startups for Sustainability Podcast｜SEMI Startups for Sustainability Initiativeの初年度について、2022年のファイナリストと一緒にAtonarpが議論しました。· Atonarp |
| 2022-11-16 | Sustainability in semiconductor manufacturing 半導体製造におけるサステナビリティ· Atonarp |
| 2022-09-28 | Commercial use of residual gas analyser for freeze-drying 凍結乾燥用残留ガス分析計の商用利用について· Atonarp |
| 2022-09-08 | Webinar: new spatial ALD metrology solutions ウェビナー｜空間ALD計測ソリューションの新展開· Atonarp |
| 2022-07-19 | Atonarp appoints Nobel laureate James E. Rothman to its board アトナープ、ノーベル賞受賞者ジェームズ・E・ロスマンを取締役に迎え入れる· Atonarp |
| 2022-07-11 | Webinar: unlocking molecular insights ウェビナー｜分子インサイトを解き明かす· Atonarp |
| 2021-05-30 | Series D: $50M; total $111M· Company release |
Founder profiles: Prakash Murthy
Funding rounds in 2026
No 2026 rounds in our database yet. Earlier funding is summarised above from the cited source.