Twitter was largely silent last month about the details of its planned initial public offering, saying only that it had filed papers confidentially.
But on Thursday, as the company made its prospectus public, employees and other insiders were not shy about documenting the moment. Excitement was high at the company’s San Francisco headquarters, with a visit from the founders and the author Margaret Atwood.
As prospective investors pored over Twitter’s financial information, Twitter employees shared photographs and updates. Amid the festive atmosphere, three of the company’s founders â€" who have stepped away from their roles at the company and have a complicated history â€" were photographed speaking to employees.
At one point, one of the founders, Evan Williams, was even seen looking at his smartphone â€" possibly to check Twitter.
One employee, Doug Williams, described the talk as a “high point.â€
Another, Ed Gutman, shared some vintage-looking graphics.
Others expressed gratitude.
Mr. Williams was caught sneaking a peek at his smartphone.
Biz Stone, one of the founders, who now runs a start-up called Jelly, reflected on the meeting.
The head of commerce at Twitter, Nathan Hubbard, coined a new word.
But investors were focused on the I.P.O. prospectus.
Elizabeth Weil, a former Twitter executive who is now a partner at the venture capital firm Andreessen Horowitz, employed a metaphor.
The filing contained a trove of information. One Twitter employee saw a new side of the chief executive, Dick Costolo.
One early investor in Twitter, the venture capitalist Chris Sacca, was fairly coy.
A Twitter designer, Alex Girón, made an understated remark.
But some Twitter employees took the opportunity to let loose.
Amid the fanfare, a literary celebrity showed up at Twitter’s headquarters.
Some employees shared their excitement.
But by early Friday, Mr. Sacca was already talking about another of his investments.
