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Palo Alto Networks was founded in 2005 by Nir Zuk, a former engineer from Check Point and NetScreen Technologies. Zuk, an Israeli native, began working with computers during his mandatory military service in the Israel Defense Forces in the early 1990s and served as head of software development in Unit 8200, a branch of the Israeli Intelligence Corps.
The company debuted on the NYSE on July 20, 2012, raising $260 million with its initial public offering, which was the 4th-largest tech IPO of 2012. It remained on the NYSE until October 2021 when the company transferred its listing to Nasdaq.
In 2014, Palo Alto Networks founded the Cyber Threat Alliance with Fortinet, McAfee, and Symantec (now NortonLifeLock), a not-for-profit organization with the goal of improving cybersecurity "for the greater good" by encouraging cybersecurity organizations to collaborate by sharing cyber threat intelligence among members. By 2018, the organization had 20 members including Cisco, Check Point, Juniper Networks, and Sophos.
In 2018, the company began opening cybersecurity training facilities around the world as part of the Global Cyber Range Initiative.
In May 2018, the company announced Application Framework, an open cloud-delivered ecosystem where developers can publish security services as SaaS applications that can be instantly delivered to customers.
In 2019, the company announced the K2-Series, a 5G -ready next-generation firewall developed for service providers with 5G and IoT requirements. In February 2019, the company announced Cortex, an AI -based continuous security platform.
In May 2026, it was reported that Palo Alto hit a market capitalization of $200 billion USD for the first time.
In August 2026, China launched a security review into Palo Alto's products within the Chinese market.
Acquisitions
January 2014: Morta Security
April 2014: Cyvera for approximately $200 million
May 2015: CirroSecure
March 2017: LightCyber for approximately $100 million
March 2018: Cloud Security company Evident.io for $300 million. This acquisition created the Prisma Cloud division.
April 2018: Secdo
October 2018: RedLock for $173 million
February 2019: Demisto for $560 million
May 2019: Twistlock for $410 million
June 2019: PureSec for $47 million
September 2019: Zingbox for $75 million
November 2019: Aporeto, Inc. for $150 million
April 2020: CloudGenix, Inc. for $420 million
August 2020: Crypsis Group for $265 million
December 2020: Expanse for $1.25 billion.
February 2021: Bridgecrew for $156 million
November 2022: Cider Security for $300 million.
October 2023: Announced its intent to acquire Dig Security for $400 million
November 2023: Talon Cyber Security for $625 million
December 2023: Dig Security for $400 million
July 2025: Protect AI for $500 million
July 2025: Announced agreement to acquire CyberArk for $25 billion; completed February 2026
November 2025: Announced acquisition of Chronosphere for $3.35 billion; completed January 2026
February 2026: Koi Security for an estimated $400 million
April 2026: Announced agreement to acquire Portkey.
September 2026: Announced agreement to acquire Console for an estimated $500 million.