Relentless Closes $80M Debut Fund to Back High-Conviction Seed-Stage Founders

Relentless just closed $80M for its debut seed fund, and the name is not trying to be cute. Good. Cute rarely writes the first check when a founder is half product, half caffeine, and all conviction. Relentless Fund I is the new seed vehicle from Damir Becirovic, the former Index Ventures Partner who spent a decade around the kind of companies people later pretend were obvious after the screenshots hit X and the valuation rounds start sounding like Powerball numbers whispered at a wine bar in Palo Alto.

Damir Becirovic is joined by co-founder Dino Becirovic, his twin brother, because apparently one Becirovic with pattern recognition was not enough for the venture ecosystem. Dino Becirovic brings Index, Kleiner Perkins, Twitter corporate development, Aven, and now Bond, where he is also CEO. That is not a résumé. That is a venture mixtape with receipts, tire marks, and a few late-night calls that probably started with, “You seeing this market right now?”

The firm is New York-based with bicoastal reach, registered as RELENTLESS Investments Fund I, L.P., with an SEC address at 751 Ruby Street, Redwood City, CA 94061. Founded in 2025, Relentless filed its Form D on April 22, 2025, with a $100M total offering amount before the $80M close was reported on May 1, 2026. Numbers matter. Timing matters more. Venture has always been a game of catching movement before the crowd starts calling it destiny.

Relentless is focused on seed-stage founders doing their life’s work, which is a polite way of saying they are not looking for tourists with a deck, a slogan, and a podcast microphone. The fund leads with typical $2M–$5M checks, can invest up to $10M per company, and keeps reserves for follow-ons. The commitment-to-close target is 10 days. In seed, speed is not a luxury. It is leverage. Founders remember who moved when payroll looked like a hostage negotiation.

The team also includes Ali Altaf, named as a Founding Partner, who spent a decade at Pinterest helping scale the platform from 50M to 550M users while building PinAngels into a serious angel syndicate. Sony Theakanath joins as Partner, bringing experience from Asaii, acquired by Apple, another identity startup exit, Apple Music, Meta, AI, AR/VR, privacy engineering, and a database privacy patent. Relentless did not assemble a committee. It assembled operators who have already been punched in the mouth by scale and came back with better instincts.

The early portfolio already says enough without yelling. DiligenceSquared raised a $5M seed led by Relentless for AI-native commercial due diligence. Advocacy raised a $3.5M seed led by Relentless for an AI-native litigation workspace. Bond is also backed by Relentless, because sometimes the people writing the checks still know how to build. That detail matters more than most founders realize when the market gets weird again.