# Dan Siroker, Co-Founder & CEO > Dan Siroker, Co-Founder & CEO. The rounds they were named in and the filings that name them, each with its source. Source: https://millionrounds.com/person/dan-siroker (Millionrounds; every figure on the page links to its filing or article) Denver, US · Angel # Dan Siroker Co-Founder & CEO Profile summary - **Rounds named:** - none observed - **Filings:** 2 with regulators - **Podcasts:** 5 episodes What this record rests on - **Named in rounds** No round names them yet - ✓ **On filings** 2 filings with a regulator - **Linked to a firm** No firm on record - **Claimed** Not claimed yet Titles come from filings their firm signed. [Correct or remove](https://millionrounds.com/corrections?person=dan-siroker)[Is this you? Claim it](https://millionrounds.com/claim?person=dan-siroker) ## Companies they are listed as backing Portfolio - [ClearBrain](https://millionrounds.com/startup/clearbrain) - [Haystack](https://millionrounds.com/startup/haystack) - [Milk Video](https://millionrounds.com/startup/milk-video) - [MindPortal](https://millionrounds.com/startup/mindportal) - [Navattic](https://millionrounds.com/startup/navattic) ## Where they are named on record Filings - SEC Form D · Company raising **Rewind AI, Inc.** Executive Officer, Director on 2 filings · since 2023 - SEC Form D · Company raising **Optimizely, Inc.** Executive Officer, Director on 4 filings · since 2013 Each row is a document a firm filed with a regulator: somebody signed it, and it carries a date. ## Hear them before you pitch them - [The Twenty Minute VC](https://millionrounds.com/podcasts/20vc) · 15 May 2024 · 1h 16m 20VC: Fundraising Wisdom that is Total BS; Dilution, Meeting Associates, Taking the Highest Price, Always Be Raising | Why Second Time Founders Are More Investable & Why Not To Hire People Out of College with Dan Siroker, CEO @ Limitless With [Dan Siroker](https://millionrounds.com/person/dan-siroker) Mentions [Dalton Caldwell](https://millionrounds.com/fund/dalton-caldwell)[Elad Gil](https://millionrounds.com/fund/elad-gil)[Peter Fenton](https://millionrounds.com/person/peter-fenton) About this episode Dan Siroker is the Co-Founder and CEO @ Limitless, a personalized AI powered by what you've seen, said, or heard. For his latest funding round, Dan took an unusual approach resulting in 1,000 preliminary offers with valuations as high as $1BN, and resulted in a $350 million Series A valuation.… More on the show's page Listen on Apple PodcastsThe show's page - [Generative Now](https://millionrounds.com/podcasts/generative-now) · 9 Nov 2023 · 1h 2m Dan Siroker: Giving Humans the Superpower of Perfect Memory With [Dan Siroker](https://millionrounds.com/person/dan-siroker) Mentions [Y Combinator](https://millionrounds.com/fund/y-combinator) About this episode Rewind is a personalized AI powered by everything you’ve seen, said, or heard. Rewind’s co-founder and CEO Dan Siroker lived several lifetimes before starting the company: product manager at Google, Director of Analytics for the 2008 Obama campaign, and co-founder of Optimizely. Lightspeed Partner… More on the show's page Listen on Apple PodcastsThe show's page - [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) · 12 Oct 2023 · 40 min Debating personal AI hardware with Rewind AI's Dan Siroker | E1828 With [Dan Siroker](https://millionrounds.com/person/dan-siroker) About this episode This Week in Startups is brought to you by… Codecademy. Build the future you want to see with Codecademy. Codecademy Pro helps you learn everything you'll need to shape what comes next in the tech space. Try it free for 14 days. Visit Codecademy.com/TWiST.Tech Domains has a new program called… More on the show's page Listen on Apple PodcastsThe show's page - [In Depth](https://millionrounds.com/podcasts/in-depth) · 14 Sept 2023 · 1h 6m AI Hot Takes and Unusual Twitter Fundraising Strategies with Dan Siroker (Rewind AI) With [Dan Siroker](https://millionrounds.com/person/dan-siroker) About this episode Dan Siroker is the co-founder and CEO at Rewind AI, a personalized AI powered by everything you’ve seen, said, or heard. Dan launched Rewind to an emphatic response on Twitter, and used a public pitch video to fundraise at a $350m valuation. Prior to starting Rewind, Dan co-founded Optimizely,… Listen on Apple Podcasts - [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) · 18 May 2023 · 48 min Viral fundraising tactics with Rewind AI's Dan Siroker + How to build a strong brand | E1745 With [Dan Siroker](https://millionrounds.com/person/dan-siroker) About this episode This Week in Startups is presented by: Merge. Let your developers get back to their core product. Merge is a single API to add hundreds of integrations to your app. Integrate up to 3 customers for free today at http://merge.dev/twist. Embroker. The Embroker Startup Insurance Program helps… More on the show's page Listen on Apple PodcastsThe show's page Episodes of [the shows we follow](https://millionrounds.com/podcasts), matched by name. Not them? [Tell us](https://millionrounds.com/corrections?person=dan-siroker). ## Find people like Dan Filter every partner and angel by firm, kind, market and whether we watched them invest. Free with an account. Search people[How we know what we know](https://millionrounds.com/methodology)