Yaroslav Azhnyuk’s Fourth Law secures investment round and unveils autonomy module and UAV system

The developer of AI systems for FPV drones, Fourth Law, has announced that it has raised funding from a group of venture capital funds and angel investors from the EU, US, and Canada. The amount of the round has not been disclosed.

The startup also released the first video showcasing large-scale battlefield use of AI-powered terminal guidance and unveiled Fourth Law’s first products — the TFL-1 autonomy module and the Lupinis-10-TFL-1 unmanned aerial system.

The founder and CEO of Fourth Law is Ukrainian serial entrepreneur Yaroslav Azhnyuk. He launched the company in 2023 to develop autonomy solutions for robotic systems. At present, the company is focused on building scalable solutions for FPV drones. Azhnyuk describes drone autonomy as the most important defence technology of the decade.

Fourth Law claims that its TFL-1 autonomy module and the Lupinis-10-TFL-1 UAS significantly boost FPV drone mission success rates while increasing unit cost by only 10–20%. The company’s technology enables drones to hand over control during the final 500 metres of flight to an onboard AI-powered computer. This allows the system to overcome electronic warfare interference, radio line-of-sight limitations, and enhances pilot effectiveness.

The product is already being used successfully by Ukraine’s Defence Forces, according to the company. Colonel Ruslan Shevchuk, commander of the 58th Separate Motorised Infantry Brigade of the AFU, says his brigade’s drone pilots have been using the TFL-1 system since March 2025, and the technology has proven itself in combat. “It helps overcome EW interference, acquire targets and strike them in difficult conditions. In our experience — it’s a system that truly works,” he said.

Fourth Law also states that its engineers have created a multi-layered AI system capable of identifying both stationary and moving targets and flying precisely to the centre point, despite obstacles encountered in real-world missions.

In addition to its autonomy modules, Fourth Law is already supplying the Lupinis-10-TFL-1 both as a standalone drone and as a complete unmanned aerial system. The full system includes one hundred 10-inch FPV drones equipped with TFL-1 modules, a ground control station, and supporting equipment. These drones are capable of striking targets up to 30 kilometres away while carrying a 1 kg payload, and up to 3.5 kg at shorter distances.

The TFL-1 module is designed for mass production at a scale of hundreds of thousands of units per month, with a price point that enables it to be installed on every FPV drone, according to the developers. Beyond the Lupinis platform, TFL-1 has been integrated into drones from more than a dozen major FPV manufacturers. Fourth Law supplies the Lupinis-10-TFL-1 UAS to Ukraine’s Defence Forces and government clients, while TFL-1 modules and licences can also be integrated and procured by other UAS manufacturers.

The company adds that TFL products have undergone codification and are now in use across dozens of AFU units.

UPD: The Finnish-Ukrainian investment company Double Tap Investment (DTI) was one of the participants in Fourth Law’s investment round. DTI co-founder Oles Khudoba shared the news with Defender Media. “The Fourth Law is a team that has managed to combine deep engineering, advanced autonomy, and the harsh realities of the battlefield. What they’ve developed is not just another autopilot, but an adaptive system that functions where comms are down and every second matters. These are the kinds of technologies that create real tactical advantage,” he said.

Oles also explained that, by agreement with Yaroslav Azhniuk and the other investors, the company will not disclose the amount it invested in this round.