John  Graham-Cumming net worth and biography

John Graham-Cumming Biography and Net Worth

Director of Cloudflare

Dr. Graham-Cumming has served as a member of our Board of Directors since March 2025. Dr. Graham-Cumming served as the Company’s Chief Technology Officer from 2016 until March 2025. Prior to that, he served as a Programmer for the Company since December 2011. Dr. Graham-Cumming holds a B.A. and M.A. in Mathematics and Computation, a D.Phil. in “The formal development of secure systems” from the University of Oxford.

What is John Graham-Cumming's net worth?

The estimated net worth of John Graham-Cumming is at least $91.85 million as of February 9th, 2026. Graham-Cumming owns 495,191 shares of Cloudflare stock worth more than $91,848,027 as of February 13th. This net worth approximation does not reflect any other assets that Graham-Cumming may own. Learn More about John Graham-Cumming's net worth.

How do I contact John Graham-Cumming?

The corporate mailing address for Graham-Cumming and other Cloudflare executives is 101 Townsend Street, San Francisco CA, 94107. Cloudflare can also be reached via phone at 888-993-5273 and via email at [email protected]. Learn More on John Graham-Cumming's contact information.

Has John Graham-Cumming been buying or selling shares of Cloudflare?

During the last quarter, John Graham-Cumming has sold $941,522.40 in Cloudflare stock. Most recently, John Graham-Cumming sold 2,520 shares of the business's stock in a transaction on Monday, February 9th. The shares were sold at an average price of $173.35, for a transaction totalling $436,842.00. Following the completion of the sale, the director now directly owns 495,191 shares of the company's stock, valued at $85,841,359.85. Learn More on John Graham-Cumming's trading history.

Who are Cloudflare's active insiders?

Cloudflare's insider roster includes Forest Baskett (Major Shareholder), Maria Eitel (Director), John Graham-Cumming (Director), Patrick Kerins (Major Shareholder), Douglas Kramer (General Counsel), Carl Ledbetter (Director), Stanley Meresman (Director), Matthew Prince (Co-Founder & CEO), Janel Riley (CAO), Scott Sandell (Director), Thomas Seifert (CFO), Katrin Suder (Director), Paul Underwood (CAO), and Michelle Zatlyn (COO). Learn More on Cloudflare's active insiders.

Are insiders buying or selling shares of Cloudflare?

In the last twelve months, insiders at the sold shares 105 times. They sold a total of 2,454,961 shares worth more than $443,942,394.39. The most recent insider tranaction occured on February, 9th when Director John Graham-Cumming sold 2,520 shares worth more than $436,842.00. Insiders at Cloudflare own 10.9% of the company. Learn More about insider trades at Cloudflare.

Information on this page was last updated on 2/9/2026.

John Graham-Cumming Insider Trading History at Cloudflare

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
2/9/2026Sell2,520$173.35$436,842.00495,191View SEC Filing Icon  
1/5/2026Sell2,520$200.27$504,680.40495,191View SEC Filing Icon  
12/15/2025Sell2,520$199.37$502,412.40495,191View SEC Filing Icon  
11/3/2025Sell2,520$250.83$632,091.60495,191View SEC Filing Icon  
10/13/2025Sell2,520$221.36$557,827.20495,191View SEC Filing Icon  
9/2/2025Sell10,215$206.32$2,107,558.80495,191View SEC Filing Icon  
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John Graham-Cumming Buying and Selling Activity at Cloudflare

This chart shows John Graham-Cumming's buying and selling at Cloudflare by year and by quarter.

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Cloudflare Company Overview

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Cloudflare, Inc. operates as a cloud services provider that delivers a range of services to businesses worldwide. The company provides an integrated cloud-based security solution to secure a range of combination of platforms, including public cloud, private cloud, on-premise, software-as-a-service applications, and IoT devices; and website and application security products comprising web application firewall, bot management, distributed denial of service, API gateways, SSL/TLS encryption, script management, security center, and rate limiting products. It offers website and application performance solutions, including content delivery, load balancing, DNS, agro smart routing, video stream delivery, web optimization, cache reserve, cloudfare waiting room, and cloudfare data localization suite; SASE platform through cloudfare one that provides a cloud-based network-as-a-service; network services which deliver network connectivity, security, and performance, including magic WAN, magic transit, magic firewall, cloudflare network interconnect, and spectrum. In addition, the company provides zero trust services, such as cloudflare access, cloudflare gateway, remote browser isolation, cloud access security broker, cloud email security, and data loss prevention products that protects, inspects, and provides privilege rules to grant access to data and application. Further, it provides developer-based solutions consisting of cloudflare workers, R2 object storage, workers KV, durable objects, cloudfare pages, cloudfare stream, and cloudfare images; and consumer products comprising of 1.1.1.1, a DNS resolver, WARP, a virtual private network, and cloudfare registrar that secures registration and management of domain names. The company serves customers in the technology, healthcare, financial services, consumer and retail, industrial, and non-profit industries, as well as government. Cloudflare, Inc. was incorporated in 2009 and is headquartered in San Francisco, California.
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Today's Range

Now: $185.48
Low: $181.47
High: $200.50

50 Day Range

MA: $190.36
Low: $163.04
High: $213.64

2 Week Range

Now: $185.48
Low: $89.42
High: $260.00

Volume

7,631,465 shs

Average Volume

6,151,152 shs

Market Capitalization

$64.97 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.97