The Fourth Law
About
About The Fourth Law
The Fourth Law supplies TFL-1 as an autonomy module for integration into other manufacturers' aircraft, alongside complete drone configurations such as Lupynis-10-TFL-1. Its product range includes daylight and thermal-camera options and an interceptor programme, Zerov-8. This combines a component business with integration of the same autonomy technology into finished aircraft.
The company's development programme extends into simulation, analytics and fleet-management infrastructure. It works with equipment partners on integration and manufacturing, including a June 2026 memorandum with RSI Europe to develop joint production in Lithuania. The Lithuanian arrangement is a manufacturing-development plan, while the existing product range serves Ukrainian defence users.
Products
Supply
Funding
Investors
- Axon - Lead - Unknown - 1 funding event - first seen 2026-02-16
Team
- Yaroslav Azhnyuk - Founder
Timeline
Events
- 2026-10-12 - Partnership - PDW signs Kurbas camera qualification and production MoU
Initial work would evaluate a U.S.-compliant, export-ready configuration of the Kurbas 640 camera family. PDW’s proposed manufacturing role depends on successful evaluation and separate definitive agreements. The partners also intend to explore U.S. thermal-sensor manufacturing through Project Foundation.
Source - 2026-06-18 - Partnership - The Fourth Law and RSI Europe sign MoU for Lithuania drone production
The agreement covers joint drone production in Lithuania using Ukrainian autonomy and drone technology. The manufacturing plan sits under the Build with Ukraine framework.
Source - 2026-02-16 - Funding - The Fourth Law secures strategic investment from Axon to advance AI-powered drone autonomy
The Fourth Law announced a new funding round backed by Axon The company said the capital will accelerate AI-powered autonomy for drones and air-defence applications Public sources describing the round did not disclose the financing amount
Source - 2026-02-16 - Product Launch - The Fourth Law launches Zerov autonomous interceptor drone
The Fourth Law launched Zerov as an autonomous interceptor drone. The system is designed to use onboard autonomy for target acquisition and terminal interception.
Source - 2025-12-12 - Product Launch - VYRIY PRO 10 with TFL-1 terminal guidance becomes available through Ukrainian defense procurement channels
The integrated configuration combines Vyriy's FPV platform with terminal guidance designed to sustain target tracking through the final attack phase. Availability through DOT-Chain Defence and Brave1 Market expands procurement access for Ukrainian military units.
Source - 2025-09-15 - Production Milestone - Vyriy and The Fourth Law launch mass production of autonomous drones with terminal guidance
The production line is based on the Vyriy-10 FPV drone and adds The Fourth Law’s TFL-1 terminal-guidance module. The Fourth Law said TFL-1 had already been supplied to combat brigades and increased strike effectiveness by two to four times while adding about 10% to drone cost.
Source - 2025-09-01 - Regulatory - Lupynis-10-TFL-1 and TFL-1 autonomy module receive NATO codification
The Lupynis-10-TFL-1 system and TFL-1 autonomy module received NATO stock-number codification. Codification enables the products to be referenced through NATO-compatible logistics and procurement systems.
Source
Relations
Relationships
- RSI Europe
Lithuania Drone Manufacturing Mou - The Fourth Law and RSI Europe signed an MOU for drone AI technology and Lithuanian manufacturing capacity.
- Vyriy Industries
Terminal Guidance Integration - Vyriy integrates The Fourth Law terminal-guidance technology into FPV platforms.
- PDW
Partner - PDW and The Fourth Law signed a non-binding MoU on U.S. qualification and potential production of Ukrainian thermal cameras.
Context
Comparable profiles
- Apollyon Dynamics
comparable profile - Defence Fpv Drone Builder
- Tenet Industries
comparable profile - Defence Fpv Drone Builder
- RSI Europe
comparable profile - Defence Fpv Drone Builder
- Orqa
comparable profile - Defence Fpv Drone Builder
- F-Drones
comparable profile - Defence Fpv Drone Builder
- Ptashka Drones
comparable profile - Defence Fpv Drone Builder
Shared workflows
- Kopin Corporation
workflow adjacency - Defence Fpv Strike
Context tags
- Defence FPV drone builder - Peer Group - The Fourth Law builds defence FPV and tactical strike drones.
- Defence FPV strike - Workflow - The Fourth Law drones perform FPV strike missions.
- Defence UAV builder - Stack Layer - The Fourth Law develops defence unmanned aircraft systems.
- Loitering precision strike - Workflow - The Fourth Law supports loitering precision strike capability.
- Unmanned aircraft OEM - Stack Layer - The Fourth Law builds unmanned aircraft systems.
- Autonomous mission execution - Capability - The Fourth Law supports autonomous mission execution.
- Defence customers - Customer Environment - The Fourth Law serves defence customers.
- Contested defence environments - Customer Environment - The Fourth Law systems operate in contested environments.