# Sunstone Partners: portfolio, investments and team > Sunstone Partners is a private equity based in United States. 1 investment on record, latest Oct 2017. Portfolio, stages, co-investors and team. Source: https://millionrounds.com/fund/sunstone-partners (Millionrounds; every figure on the page links to its filing or article) United States · [Investor](https://millionrounds.com/investors) # Sunstone Partners Filed with the SEC to raise a fund in Oct 2026. Last cheque observed Oct 2017. Quiet New fund, Oct 2026 Private equity Seed Series A Series B Cybersecurity And Technology Digital Media Tourism Cheques on record **0%** of best year **0** **cheques in 12 months**, 1 on record Since the last cheque **3282** days **00** hrs **00** min **00** sec Median round **$20M** Rounds led **0 of 1** Sole investor **1 rounds** Pitch Sunstone Partners ## Sunstone Partners highlights - 01 1 rounds on record - 02 Sole investor in 1 rounds, median $20M ## What they do - **Type:** Private equity (from a list, unverified) - **Cheque size:** Not stated - **Stages:** Seed Series A Series B Growth - **Sectors:** Cybersecurity And Technology Digital Media Tourism - **Based in:** San Mateo, United States - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **1 appearances** - **2017** 1 round - **Oct** **[Onica](https://millionrounds.com/company/onica)** US · FinSMEs **$20M** Sole investor An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The team Named by the firm itself, on a filing, its Form ADV or its company registration **5 named** AA **Arneek Arun Multani** Co-Founder and Managing Partner i Form ADV GM **Gustavo M Alberelli** Co-Founder and Managing Partner i Form ADV HS **Howard Sheldon Zeprun** General Counsel and Chief Compliance Officer i Form ADV ML **Michael Lawrence Biggee** Co-Founder and Managing Partner i Form ADV NI **Nestor Ivan Olmo** Chief Financial Officer i Form ADV We also hold **14** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them. ## What the register says From the firm's own filings with the SEC, which it must file accurately by law **$1.6B** assets it manages Oct 2026 **Registered** investment adviser full reporting to the SEC - **Legal name:** Sunstone Partners Management, LLC - **SEC number:** CRD 305064 Funds on its Form ADV **8** private funds, **$1.3B** in gross assets · filed Apr 2024 - Sunstone Partners I, L.P. *Private equity* 28 investors $493M - Sunstone Partners II, L.P. *Private equity* 30 investors $488M - Sunstone Partners II-A, L.P. *Private equity* 10 investors $181M - Sunstone Partners III-MAIN, L.P. *Private equity* 38 investors $66M - Sunstone Partners III-A, L.P. *Private equity* 14 investors $23M - Sunstone Partners Executive Fund II, L.P. *Private equity* 13 investors $9.4M - Sunstone Partners Co-Invest I, L.P. *Private equity* 4 investors $5.4M - Sunstone Partners Executive Fund III, L.P. *Private equity* 28 investors $2.2M New fund on file **Raised** a new fund in Oct 2026 From its SEC filing, not a journalist: a firm that has just raised has money to deploy. ## The cheque Seed Series A Series B Median round joined **$20M** the round, not its cheque Alone, median **$20M** Led 0 of 1 rounds **0%** - **Sole investor:** 1 rounds - **Last cheque:** Oct 2017 Rounds by stage said on their site - Seed said *-* - Series A said *-* - Series B said *-* - Growth said *-* **Pitching Sunstone Partners?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Quick answers about Sunstone Partners ### What does Sunstone Partners invest in? Sunstone Partners says it invests in Cybersecurity And Technology, Digital Media and Tourism. ### How active is Sunstone Partners? 1 investments on record, 0 of them in the last 12 months. The most recent was in Oct 2017. ### What has Sunstone Partners invested in recently? Its most recent investments on record: Onica (Undisclosed round, Oct 2017). ### How big are Sunstone Partners's cheques? The median round it joins is $20M. ### Is Sunstone Partners investing now? No investments in the last 12 months; the latest was in Oct 2017. ### What kind of investor is Sunstone Partners? Sunstone Partners is a private equity firm based in San Mateo, United States. ### How much does Sunstone Partners manage? About $1.6B, as regulatory assets under management (Oct 2026). ### Has Sunstone Partners raised a new fund? Its latest fund filing with the SEC was in Oct 2026. ## Raising now? 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