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John L Hennessy, insider at Alphabet

John L Hennessy Insider Information

Director of Alphabet

John Hennessy is the current chairman of Alphabet. 

Hennessy is perhaps best known for his leadership at Stanford University, where he has spent most of his career, serving as president from 2000 to 2016. 

In 1977, he became an assistant professor at Stanford, and in 1983, he was promoted to associate professor. In 1986, he was awarded the inaugural title of the Willard and Inez Kerr Bell Endowed Chair. Hennessy gained fame at the university and across the country, for his work on computer architecture, namely reduced instruction set computer architecture (RISC). 

In 1983, Hennessy’s Stanford team developed a prototype MIPS chip. To continue this chip’s advancement, he co-founded the MIPS Computer Systems while on sabbatical from Stanford in 1984. He served for eight years as the company’s chief scientist, and spent six more as its chief architect. MIPS was later acquired by Silicon Graphics, and its high-performance graphics workstations were relied upon heavily by Hollywood in the late 1980s and 1990s. 

By 1998, Hennessy had co-founded another company, Atheros Communications, a pioneer in Wi-Fi technology. He served as chairman of its board until 2010. 

In 2000, he was named Stanford’s tenth president. During his 16-year tenure as president, Hennessy championed building projects, improved the performing arts presence at the university, and made Stanford more affordable and accessible. While he was president, Stanford’s financial aid program became one of the strongest in the nation. 70 new buildings were built from 2000 to 2016—including the addition of new performance and exhibition spaces for students. Upon his retirement, Hennessy became the inaugural director of the Knight-Hennessy Scholars program which awards select students full funding to pursue a graduate or professional degree in any of the university’s seven schools. 

Hennessy currently serves on the boards of the Gordon and Betty Moore Foundation, Cisco Systems and Alphabet, where he is chairman of the board. He has co-authored two internationally-used textbooks on computer architecture with David Patterson. 

The recipient of numerous awards and honors, Hennessy’s contribution to the worlds of computer architecture and Stanford University are immeasurable. In 2012, he received the Institute of Electrical and Electronics Engineers’ Medal of Honor, its highest award. In 2017, he was given the ACM Turing Prize, along with David Patterson. Other awards include, the 2000 John von Neumann Medal, the 2001 Seymour Cray Computer Engineering Award, the 2004 NEC C&C prize for lifetime achievement in computer science and engineering, and the 2001 Eckert-Mauchly Award from the Association for Computing Machinery.

He is a member of the Royal Academy of Engineering, the Fellow of the National Academy of Engineering, the American Academy of Arts and Sciences and the American Philosophical Society. He also holds 10 honorary doctorate degrees. 

Hennessy received his bachelor’s degree in electrical engineering from Villanova University and his master’s and doctoral degrees in computer science from Stony Brook University.

What is John L Hennessy's net worth?

The estimated net worth of John L Hennessy is at least $321,783.04 as of June 7th, 2021. Mr. Hennessy owns 128 shares of Alphabet stock worth more than $321,783 as of June 13th. This net worth evaluation does not reflect any other investments that Mr. Hennessy may own.

How do I contact John L Hennessy?

The corporate mailing address for Mr. Hennessy and other Alphabet executives is 1600 AMPHITHEATRE PARKWAY, MOUNTAIN VIEW CA, 94043. Alphabet can also be reached via phone at 650-253-0000.

Has John L. Hennessy been buying or selling shares of Alphabet?

During the last quarter, John L. Hennessy has sold $496,921.00 of Alphabet stock. Most recently, John L. Hennessy sold 70 shares of the business's stock in a transaction on Monday, June 7th. The shares were sold at an average price of $2,449.71, for a transaction totalling $171,479.70. Following the completion of the sale, the director now directly owns 128 shares of the company's stock, valued at $313,562.88.

Who are Alphabet's active insiders?

Alphabet's insider roster includes Sergey Brin (Insider), L Doerr (Director), David Drummond (SVP), John Hennessy (Director), Ann Mather (Director), Lawrence Page (CEO), and Sundar Pichai (CEO).

Are insiders buying or selling shares of Alphabet?

During the last twelve months, insiders at the information services provider sold shares 37 times. They sold a total of 79,563 shares worth mmore than $182,320,440.01. The most recent insider tranaction occured on June, 09th when Sergey Brin Director bought 13,889 shares worth more than $34,646,249.39. Insiders at Alphabet own 13.0 % of the company.

Information on this page was last updated on 6/9/2021.

John L Hennessy Insider Trading History at Alphabet

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
6/7/2021Sell70$2,449.71$171,479.70128View SEC Filing Icon  
5/7/2021Sell70$2,405.72$168,400.4095View SEC Filing Icon  
4/7/2021Sell70$2,243.44$157,040.8064View SEC Filing Icon  
3/8/2021Sell70$2,083.46$145,842.2033View SEC Filing Icon  
2/8/2021Sell70$2,085.54$145,987.8041View SEC Filing Icon  
12/7/2020Sell55$1,813.27$99,729.85613View SEC Filing Icon  
10/5/2020Sell60$1,473.43$88,405.80548View SEC Filing Icon  
9/8/2020Sell60$1,538.29$92,297.40517View SEC Filing Icon  
7/6/2020Sell60$1,495.85$89,751.00664View SEC Filing Icon  
6/5/2020Sell60$1,434.85$86,091.00629View SEC Filing Icon  
5/5/2020Sell60$1,363.61$81,816.60592View SEC Filing Icon  
4/6/2020Sell45$1,151.24$51,805.8032View SEC Filing Icon  
3/5/2020Sell3$1,323.68$3,971.0443View SEC Filing Icon  
9/27/2019Sell75$1,227.77$92,082.75347View SEC Filing Icon  
9/5/2019Sell75$1,200.00$90,000.00310View SEC Filing Icon  
7/29/2019Sell75$1,238.57$92,892.75276View SEC Filing Icon  
7/26/2019Sell150$1,225.00$183,750.00276View SEC Filing Icon  
4/29/2019Sell75$1,280.51$96,038.25159View SEC Filing Icon  
3/12/2019Sell375$1,200.00$450,000.0080View SEC Filing Icon  
7/25/2018Sell724$1,250.30$905,217.20442View SEC Filing Icon  
2/5/2018Sell1,026$1,092.43$1,120,833.1854View SEC Filing Icon  
2/17/2017Sell300$833.33$249,999.008View SEC Filing Icon  
10/18/2016Sell200$800.00$160,000.00104View SEC Filing Icon  
7/29/2016Sell200$775.00$155,000.00346View SEC Filing Icon  
5/1/2014Sell1,000$528.89$528,890.00View SEC Filing Icon  
See Full Table

John L Hennessy Buying and Selling Activity at Alphabet

Alphabet Company Overview

Alphabet logo
Alphabet Inc. provides online advertising services in the United States, Europe, the Middle East, Africa, the Asia-Pacific, Canada, and Latin America. The company offers performance and brand advertising services. It operates through Google Services, Google Cloud, and Other Bets segments. The Google Services segment provides products and services, such as ads, Android, Chrome, hardware, Google Maps, Google Play, Search, and YouTube, as well as technical infrastructure; and digital content. The Google Cloud segment offers infrastructure and data analytics platforms, collaboration tools, and other services for enterprise customers. The Other Bets segment sells internet and TV services, as well as licensing and research and development services. The company was founded in 1998 and is headquartered in Mountain View, California.
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Today's Range

Now: $2,513.93

50 Day Range

MA: $2,351.91

2 Week Range

Now: $2,513.93


1,262,309 shs

Average Volume

1,475,639 shs

Market Capitalization

$1.68 trillion

P/E Ratio


Dividend Yield



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