Piston Cloud Computing, Inc.
AcquiredSan Francisco, US · Founded 2011 · Delaware corporation · 4 known investors
San Francisco company that built enterprise OpenStack private-cloud software; acquired by Cisco in June 2015.
Also known as Piston · Piston Cloud · pistoncloud.com
Founders & leadership
Piston Cloud Computing, Inc. was founded in 2011 by Christopher MacGown.
Board


Investors · 4
Also in the syndicate · 1
Reported raises · per SEC filings
Form D private placements$8.4M disclosed across 2 of 3 rounds · 2011–2015
▶$2MraisedApr 2015 · 9 investors · Other TechnologyRule 506(b)
- James MorrisroeExecutive Officer, Director
- Christopher MacGownDirector, Promoter
- Joshua McKentyPromoter
- Puneet AgarwalDirector
- Lars LeckieDirector
- Offering amount
- $2.1M
- Amount sold
- $2M
- First sale
- Mar 2015
- Incorporated
- Corporation, Delaware, 2011
- Federal exemptions
- 06b
▶$6.4MraisedApr 2015 · 8 investors · Other TechnologyRule 506(b)
- Joshua McKentyPromoter
- Christopher MacGownDirector, Promoter
- James MorrisroeExecutive Officer, Director
- Puneet AgarwalDirector
- Lars LeckieDirector
- Offering amount
- $6.4M
- Amount sold
- $6.4M
- First sale
- Jan 2014
- Incorporated
- Corporation, Delaware, 2011
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Piston Cloud Computing, Inc. was a San Francisco software company that built commercial, enterprise-grade products on the OpenStack open-source cloud platform. Its software let organizations deploy and operate large-scale distributed systems and private cloud infrastructure in their own data centers, automating orchestration and deployment of the underlying infrastructure so that development teams could stand up new services, frameworks and orchestration tools on commodity hardware without extensive infrastructure work.
The company was founded in 2011 by people who had worked on the technical teams at NASA and Rackspace and helped create the OpenStack project in 2010. CEO Joshua McKenty had been cloud architect of NASA's Nebula cloud infrastructure, a precursor of OpenStack's cloud computing component, and held an appointed seat on the OpenStack Policy Board; CTO Christopher MacGown had been a technical lead at SliceHost, which Rackspace acquired in 2008. Chief Marketing Officer Gretchen Curtis was also a co-founder.
Piston's product line reached an OpenStack 3.5 release in June 2014, which added security features and a total-cost-of-ownership calculation tool. Cisco acquired the company on June 12, 2015, folding its distributed-systems and automated-deployment expertise into the Cisco Intercloud strategy and the OpenStack foundations of Cisco Intercloud Services and Cisco OpenStack Private Cloud. Cisco subsequently issued an end-of-support / end-of-life notice for Piston Cloud Computing products.
Founding story
Co-founders Christopher MacGown, Joshua McKenty and Gretchen Curtis started the company in 2011, working out of the Victorian apartment shared by MacGown and McKenty; MacGown and McKenty came from the technical teams at Rackspace and NASA respectively and had helped create OpenStack in 2010.
Business model
Piston licensed enterprise-grade software to organizations that wanted to run and automate private cloud infrastructure in their own data centers, selling directly to enterprise IT and development teams rather than operating the infrastructure itself.
Traction
By 2014 Piston employed roughly 50 people and counted the U.S. Department of Agriculture, Swisscom, Qualcomm, Zulily and King Digital Entertainment among the organizations using its software to automate private cloud infrastructure.
Latest developments
Cisco announced the acquisition in June 2015 and completed it on June 12, 2015, positioning Piston's technology and team within its Intercloud strategy; Cisco later published an end-of-support and end-of-life notice for Piston Cloud Computing products while directing existing Piston customers to their prior sales and support contacts.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Piston was one of several vendors commercializing OpenStack for enterprise private clouds, alongside companies such as Mirantis, Platform9, Red Hat, Canonical, SUSE and VMware, and its acquisition placed its technology within Cisco's cloud portfolio next to the earlier Metacloud acquisition (rebranded Cisco OpenStack Private Cloud).
Piston was founded by contributors to the original OpenStack project from NASA and Rackspace, and positioned its software as an enterprise-ready, standards-based private cloud distribution that automated infrastructure setup on commodity hardware; the 3.5 release added security hardening and cost-of-ownership analysis.
Technology
Software built on the OpenStack open-source infrastructure-as-a-service platform, described as a new type of operating system that automates orchestration and deployment of large-scale distributed systems on commodity hardware for private cloud environments.
Go-to-market
Piston sold directly to enterprises and large organizations deploying private clouds, supported by its own sales team and a marketing organization, and drew visibility from the founders' roles in the OpenStack open-source community.
Enterprises, service providers and public-sector organizations running private clouds in their own data centers, including the U.S. Department of Agriculture, Swisscom, Qualcomm, Zulily and King Digital Entertainment, as well as agile development teams deploying services on commodity hardware.
Geography
Headquartered in San Francisco, California, with offices in the city's Union Square District; customers included organizations in the United States and Europe, such as Swisscom.
History
The company was founded in 2011 in San Francisco by Christopher MacGown, Joshua McKenty and Gretchen Curtis, initially operating from the Victorian apartment where MacGown and McKenty lived. It raised $4.5 million in July 2011 co-led by Hummer Winblad and True Ventures, with its technology then in limited beta and a public release planned for the fourth quarter of 2011. DCVC first invested in 2013. Piston shipped its OpenStack 3.5 release in June 2014 and moved into a 4,000-square-foot office in San Francisco's Union Square District the same year, by which time the team numbered about 50 people. Cisco acquired the company in June 2015.
Risks & controversies
Following the Cisco acquisition, Piston's products were placed on an end-of-support / end-of-life path, ending the standalone product line.
Compiled by commissioned research from 6 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 3
launches, deals, and filingsCisco acquired Piston Cloud Computing, a privately held San Francisco-based OpenStack product company, to advance its Intercloud strategy and enhance the operational capabilities of the OpenStack components underpinning Cisco Intercloud Services and Cisco OpenStack Private Cloud.
Piston released version 3.5 of its OpenStack product, adding stronger security features and a tool for customers to calculate total cost of ownership.
Piston moved into a 4,000-square-foot open-plan space in San Francisco's Union Square District, one block from its previous headquarters.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities · 1
corporate structureIn the news
▸Research sources · 6
primary sources listed
- Piston Cloud Computing Revs Up With $4.5Mvcnewsdaily.com · web
6 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Piston Cloud Computing, Inc. do?
- San Francisco company that built enterprise OpenStack private-cloud software; acquired by Cisco in June 2015.
- Who founded Piston Cloud Computing, Inc.?
- Piston Cloud Computing, Inc. was founded by Christopher MacGown in 2011.
- Who are Piston Cloud Computing, Inc.'s investors?
- Piston Cloud Computing, Inc.'s investors include DCVC (Data Collective), Hummer Winblad Venture Partners (HWVP), True Ventures.
- How much funding has Piston Cloud Computing, Inc. raised?
- Piston Cloud Computing, Inc. has disclosed $8.4M raised across 2 of its 3 known rounds.
- Where is Piston Cloud Computing, Inc. headquartered?
- Piston Cloud Computing, Inc. is headquartered in San Francisco, US.