John Kline
About John Kline
The only public record we found for John Kline as an angel investor is his participation in the Authors First seed round. The company's launch announcement of October 6, 2026 lists him among the angel investors in that round, alongside Andy Mills, Mike Duggal and Bolt Ventures, the family office of David Blitzer.
We did not find a public list of his other angel investments, a biography, or an employer. Searches for the name returned several unrelated people named John Kline or John Klein, and we have not attributed their careers to this profile. If you are John Kline, you can send us your background to add.
Authors First is a book-to-screen studio and distribution platform. It pairs human-led production with AI tools so authors can adapt their books for the screen, and it gives them creative authority and final-cut approval. The company says it raised over $10 million in a seed round led by Brand Foundry and founder and CEO Robert Hamwee. Press coverage says the funds will go toward expanding operations and developing the platform. It is based in New York City.
John Kline has not published a thesis, a preferred stage or a check size that we could find. His one known AI deal is a seed round in an AI-enabled media production company. That is not enough to say what sectors or geographies he prefers. His check size in Authors First was not disclosed.
- Authors First: AI-enabled book-to-screen studio and distribution platform led by Robert Hamwee. Kline took part in its $10M+ seed round, announced October 2026.
- morningstar.com/news/business-wire/20261006520082/authors-first-launch
- variety.com/2026/biz/news/ai-studio-authors-first-10-million-writers-a
- finsmes.com/2026/10/authors-first-raises-over-10m-in-seed-funding.html
- traded.co/vc/deal/authors-first-raises-10-million-in-seed-funding-led-
- thesaasnews.com/news/authors-first-raises-10m-seed
Investing activity
John Kline appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $10M. The most recent is Authors First (Seed, $10M, Oct 2026).
John Kline most often invests alongside Mike Duggal, Brand Foundry, Andy Mills and David Blitzer, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about John Kline
Who is John Kline, the angel investor?
John Kline is named as an angel investor in the Authors First seed round announced in October 2026. We found no public biography for him, so we do not describe his career here.
What AI companies has John Kline invested in?
The only one we could confirm is Authors First, an AI-enabled book-to-screen studio. It raised a seed round of over $10 million in 2026.
What is John Kline's check size?
His check size is not public. The Authors First announcement gives the total round size but not what each investor put in.
What stage does John Kline invest in?
His one confirmed AI deal is a seed round. He has not published a stage preference, so we cannot say whether he invests at other stages.
Does John Kline invest alongside other investors?
In Authors First he invested in a round led by Brand Foundry and founder Robert Hamwee. Other participants included Bolt Ventures, Andy Mills and Mike Duggal.
How can I pitch John Kline?
We found no public LinkedIn, X or personal site that we could confirm belongs to this John Kline. A warm introduction through a co-investor or through the Lounge community is the more reliable route.
Is John Kline an angel investor?
Yes. John Kline invests personally as an angel.
What stage does John Kline invest at?
In the rounds tracked on Lounge, John Kline has invested at Seed, with a median round of $10M.
Who does John Kline co-invest with?
John Kline's most frequent co-investors on Lounge are Mike Duggal (1 deal), Brand Foundry (1 deal), Andy Mills (1 deal), David Blitzer (1 deal) and Robert Hamwee (1 deal).
How can founders reach John Kline?
Founders on Lounge can see John Kline's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add John Kline to their Investor Pipeline to track the conversation.