Greylock Partners Appoints Tom Bogan as Venture Partner

June 09, 2004

Greylock Partners, one of the nation's leading early-stage venture capital firms, today announced the appointment of Thomas F. Bogan as venture partner, effective immediately. Bogan, formerly president and chief operating officer of Rational Software, now a unit of IBM, brings extensive operational expertise and a proven track record with enterprise software firms on both coasts to the Greylock team. Bogan will provide operational guidance to Greylock portfolio companies as well as identify new opportunities for early-stage investments. His appointment deepens Greylock's commitment to working in a supportive and consultative way to help entrepreneurs build market-leading companies.

"We are delighted to welcome Tom Bogan to the Greylock team," said Aneel Bhusri, managing partner of Greylock. "His demonstrated operational expertise and vision of what it takes to build successful technology firms will be invaluable in helping develop early-stage organizations into the market leaders of tomorrow."

Greylock, with offices in the Boston area and San Mateo, has invested in such companies as Ascend Communications, Checkfree, DoubleClick, Internet Security Systems, Legato, Continental Cable, (now OpenWave), Millenium Pharmaceuticals, Sungard, Tellabs, Trilogy and Red Hat. One of the nation’s oldest and most successful venture capital firms, Greylock has funded and helped build several hundred leading companies in the US, Israel and Europe for nearly 40 years.

"I’m honored to join Greylock in service of such a talented group of entrepreneurs among our portfolio firms," said Tom Bogan. "I look forward to working with them in building their companies and helping to accelerate their growth."

About Tom Bogan
Tom Bogan has led technology companies on both coasts with a focus on sound operational management. At Rational Software, his most recent role, Tom was president & COO from 2000 until its acquisition by IBM for $2.1 billion. Previously, he had served Rational as COO and general manager of its testing business.

Bogan also served as president and CEO of two early stage technology companies - Pacific Data Products of San Diego, a $25 million printer solutions firm, and Avatar Corporation, a $20 million connectivity vendor.

In previous roles Bogan was a senior finance executive at Oranje Nassau Companies, a Netherlands-based international investment firm specializing in electronics and venture capital; SCA Services Inc., a $500 million publicly traded environmental services firm; and Ernst & Young (Arthur Young) handling technology, finance and other clients.

Bogan has extensive public and private board experience and presently serves on the boards of Citrix Systems and mValent. He also serves as trustee of Stonehill College, from which he holds a BSBA degree in Accounting. Bogan can be contacted at

About Greylock

Founded in 1965, Greylock is one of the world’s leading early-stage venture capital firms. Over the past 38 years, Greylock has funded and helped build several hundred successful companies in the US, Israel and Europe. The Greylock approach uniquely puts the entrepreneur first, with Greylock working as an 'invited guest' in a highly supportive yet consultative way to help entrepreneurs build market-leading companies. Companies Greylock has funded include Ascend Communications, Continental Cable, DoubleClick, Internet Security Systems, Legato, Millenium Pharmaceuticals, (now OpenWave), Tellabs, Trilogy, Red Hat and Sungard. Greylock’s offices are located in the Boston area and in Silicon Valley. For more information, visit