SDA Tranche 3: $3.5B in Awards Reshape the Missile Tracking Landscape

The Awards

The Space Development Agency dropped the biggest proliferated LEO contracts of the year, splitting $3.5B in Tranche 3 Tracking Layer awards across three primes:

Lockheed Martin — $1.1B for 18 satellites

L3Harris — $843M for tracking layer payloads

Northrop Grumman — $764M for missile tracking satellites

What It Means

The Big Picture: SDA is doubling down on a three-vendor strategy for the tracking layer, maintaining competition while ensuring no single point of failure. This is a deliberate departure from legacy programs that concentrated risk in a single prime.

Winners & Losers:

Lockheed continues to dominate SDA tracking work, building on their Tranche 1 and 2 wins

L3Harris has solidified their position as the go-to sensor/payload provider

Northrop gets a meaningful share but smaller than their Tranche 2 allocation — worth watching

Notable absence: Rocket Lab and York Space, who won transport layer work, were not selected for tracking. The tracking layer remains big-prime territory.

For the Supply Chain:

This locks in demand for radiation-hardened processors, star trackers, and IR focal plane arrays through 2028. Component suppliers in this space will see sustained order flow.

What to Watch

SDA Tranche 3 Transport Layer awards (expected Q1 2026) — this is where Rocket Lab and York compete

Whether SDA accelerates Tranche 4 planning given geopolitical tensions

Integration timeline with ground segment (Kratos is the key player here)