Zerov-8
Tailsitter VTOL interceptor drone for countering Shahed-type UAVs, carrying an AI detection and tracking module; stated top speed 326 km/h and combat radius up to 20 km.
Prototype
Startup · Ukraine
The Fourth Law
HQ Ukraine
The Fourth Law, Inc. is a global leader in autonomous small drones, autonomy modules, and autonomy simulations for defense.
Funding1 round
- Equity raised
- Undisclosed
- Latest
- UndisclosedStage undisclosed · Jul 10, 2025
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Jul 10, 2025 | Undisclosed | Undisclosed | — | — | — | Confirmed |
- UndisclosedConfirmedUndisclosedJul 10, 2025
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems1
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Capabilities2
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Military AI and autonomy | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Describes itself as a leader in autonomous small drones, autonomy modules and simulations 'for defense'. | Reported |
| Uncrewed systems | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Describes itself as a leader in autonomous small drones, autonomy modules and simulations 'for defense'. | Reported |
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Describes itself as a leader in autonomous small drones, autonomy modules and simulations 'for defense'.—Reported
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Describes itself as a leader in autonomous small drones, autonomy modules and simulations 'for defense'.—Reported
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People1
| Person | Role |
|---|---|
| Yaroslav Azhnyuk | founder and CEO |
Sources6
Profile3
- 1
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "Ukraine", "hq_iso2": "UA", "id": "c4f50f2e-3598-4e9c-ac5f-ee63f462ba04"}”
- 2
The Fourth Law · Supports Organization · description, Organization · name, Organization · website
“The Fourth Law, Inc. is a global leader in autonomous small drones, autonomy modules, and autonomy simulations for defense.”
- 3
Systems1
- 4
The Fourth Law · Oct 5, 2026 · Supports System, System · maturity
“The Zerov-8 is equipped with the TFL Anti-Shahed detection module”
Funding1
- 5
thefourthlaw.ai · Supports Funding round
“The Fourth Law (TFL / Четвертий Закон), a defense tech company headquartered in Kyiv, Ukraine today announced that it raised funding from a group of venture funds”
People1
- 6
en.ain.ua · Supports Role
“We’re doing the most important work of our lives, and the funding we’ve raised from the investors is an invaluable catalyst to the growing defensive capabilities of the Free World,” says Yaroslav Azhnyuk, founder and CEO of The Fourth Law”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.