[This story was originally published Aug. 8. With new information, we’ve updated it, and also changed the headline to the story to reflect that we now know it’s a database company. See below.]

Elastra, a San Francisco software startup formed by former Plumtree CEO Kirill Sheynkman, has raised $2.6 million in a first round of financing, according to a regulatory filing cited by PE Wire. Hummer Winblad Venture Partners led the deal, with John Hummer joining the Elastra board of directors.

We can’t find a Web site; this company apparently has not launched yet.

Update: Here’s the Web site, and there you can find a link to an announcement about what the company is up to (we can’t provide link, because the site is Flash-based and so — annoyingly — doesn’t provide a separate URL). Below is a brief description of the company:

ELASTRA is the world’s first provider of infinitely scalable on-demand RDBMS technology. ELASTRA’s products, enable customers to create massive, infinitely scalable database clusters on Amazon’s new Elastic Compute Cloud (EC2) platform while persistently storing an unlimited amount of data on Amazon’s Simple Storage Service (S3).