Four venture capital personnel moves:

Robert Theis, a venture capitalist who left Silicon Valley firm DCM last year after serving for eight years, has joined Scale Venture Partners, also in Silicon Valley, as managing director. Thies will focus on investment in “technology infrastructure and applications.” At DCM, Theis invested in companies PGP, Roamware, NeoPath (acquired by Cisco) and the now-public VanceInfo. We’re not certain why things didn’t work out at DCM (all sides say something different), but it’s true that DCM has focused more on investments in Asia of late, and a refitting was needed. Previously, Theis was an executive at New Era of Networks (NEON), and before that spent a decade at Sun Microsystems.

Erika Brown, a long-time reporter at Forbes covering venture capital, is leaving to join venture capital firm Matrix Partners‘ office in Silicon Valley, where she will be director of marketing and business development (see her Facebook message). She told me she’ll serve the firm in a number of roles, for example helping market portfolio companies, but also providing research on what companies to invest in, including due diligence. Brown, you’ll recall, is the reporter who puts together the Forbes Midas list of the top 100 investors (see most recent Midas List). Now the question is, who takes over her role? Who will draw the ire of the VCs who are left of the list, those who complained so vociferously each year to Brown.

Separately, Bob Lisbonne, a partner at Matrix, who was a key product manager during Netscape’s early days, is leaving the firm. Too bad to see one of the more geek-friendly VCs leaving the field. He’s known to still code occasionally. Among Lisbonne’s board positions are Blue Lane Technologies, Consera Software (acquired by Hewlett-Packard), Euclid Media, LucidEra, PostPath, Renkoo, TeaLeaf Technology and Xign. In a statement, he said: I intend to explore some new ideas, have fun writing software, and ultimately pursue one or more entrepreneurial endeavors. I’ll continue to work out of my office at Matrix, so all my contact info remains the same.

Christopher “Woody” Marshall, has left Trident Capital to joined Technology Crossover Ventures as a general partner in Palo Alto, Calif. Among the investments he managed at Trident were AccountNow, Advanced Payment Solutions, Bytemobile Inc., Merchant e-Solutions, MapQuest, SideStep and Xata. TCV is investing a huge $3 billion fund, raised last year.

Update: This just in, courtesy of PEHub: Cynthia Ringo has left VantagePoint Venture Partners, and is partner at JP Morgan spinout DBL Investors , which is raising its second fund. This becomes her third VC gig. Ringo has moved around a lot. Previously, she was CEO of CopperCoom. She led the failed Pluris. She was also executive at Madge Networks and Red Brick Systems. Before VantagePoint, she was at BluePrint Ventures.