| Pioneer Trunk Factory--C. A. Malm & Co. | |
| Location: | 2185--2199 Folsom and 3180 18th Sts., San Francisco, California |
| Coordinates: | 37.7623°N -122.4148°W |
| Architect: | Welsh, Thomas |
| Architecture: | Italianate |
| Added: | March 5, 1987 |
| Refnum: | 86003727 |
The Pioneer Building is a historic building in San Francisco, California. It was listed on the National Register of Historic Places in 1987, as "Pioneer Trunk Factory--C. A. Malm & Co."
The building is located at 2185-2199 Folsom and 3180 18th Streets.
It previously housed the office of Stripe.[1]
As of 2020, it houses the offices of OpenAI and Neuralink.[2]