Payload Pioneers 2026

Isobel Porteous, EarthTraq

What do a bird, a shipping container, and a polar bear have in common? 

They can all be tracked with tech from EarthTraq, a company using space for asset monitoring, where Isobel Porteous is the founding head of business development.

Planting seeds: EarthTraq’s origins begin during Porteous’ undergraduate work at Stanford University, where she co-led the satellite team building two cubesats—Sapling-1 and Sapling-2.

The sats used a flight computer that had been developed by Max Holliday, a doctoral student at Stanford who went on to work at NASA’s Ames Research Center. When the team encountered trouble, they relied on Holliday to help them work through problems.

“I got into the habit a couple times of driving to his house in Mountain View late at night with this broken circuit board, going ‘Hey, Max, can you help us out?’” Porteous said. “It was one of those occasions…I’m on the couch with his then fiance, now wife, and their dog Luna…Max started telling me about the EarthTraq idea.” 

Meet EarthTraq: Holliday originally focused on wildlife tracking—but the company’s coverage is now much larger, to include vessels and containers (among other things.) 

  • EarthTraq builds tracking tags for less than $1, which have a 10-year battery life and work anywhere on the planet.
  • The tracking can be used in GPS-denied environments.

The company launched its first four satellites in July, on SpaceX’s Transporter-17 rideshare mission.

Nuclear threat: As a visiting fellow with the Council on Strategic Risks, Porteous is also studying how to use new tech to verify compliance with Article 4 of the Outer Space Treaty that bans nuclear weapons in space—the subject of her senior honors thesis.

“When the news came out in February 2024 that the US intelligence community had some evidence that the Russians had developed a nuclear weapon for placement in outer space, I really just sat there going, ‘This is a threat to my Sapling satellites,’” she said. “It felt not personal, but almost personal, because it is an indiscriminate weapon.”