2025 Main Bus Program

2026 FALL OPEN SEASON Update July 22, 2026 In support of the Main Bus Program, GSA is providing the following updates for the 2026 Fall Open Season: The following attachment is hereby incorporated into this posting: MainBus_OpenSeasonConferenceFY26Fall_2026-07-22.pdf Vendors and potential offerors wishing to view the conference recording must first obtain a GSA Affiliated Customer Account (GACA) to gain access. Instructions for obtaining a GACA are attached to this notice. Once approved, offerors may access the recording at the following link: https://drive.google.com/file/d/1EFgMXYbP8wJ-YLYkDUjkEVuvG-sxBEpW/view?usp=sharing (If the link does not open directly, copy and paste the address into your web browser). July 14, 2026 In support of the 2025 Main Bus Program, GSA is announcing the FY26 Fall Open Season period for existing contractors to submit New Model Year (NMY) updates to awarded line items and for prospective offerors to provide proposals. Important Dates: Comment Collector opened in GSAFleet.gov: June 2, 2026 Bid Intention Period opened in GSAFleet.gov: June 2, 2026 Comment Collector closes in GSAFleet.gov: June 30, 2026 Bid Intention Period closes in GSAFleet.gov: June 30, 2026 Fall Open Season Industry Day: July 22, 2026 Bid Period opening in GSAFleet.gov: August 3, 2026 Bid Period closing in GSAFleet.gov: August 21, 2026, at 12:00 PM Eastern Time Supplemental Documents due (if applicable): August 21, 2026, at 12:00 PM Eastern Time GSA will hold a virtual Industry Day as stated above to discuss the Open Season process. All interested parties should attend. The Google Meet joining information is as follows: 2026 Fall Open Season Industry Day Wednesday, July 22 · 10:00 – 11:00 AM Eastern Time Google Meet joining information: Video call link: https://meet.google.com/ukp-fpqh-ojx Or dial: ‪(US) +1 442-666-1370 PIN: ‪611 355 047# More phone numbers: https://tel.meet/ukp-fpqh-ojx?pin=9965853018233 The Government intends to make awards based on initial offers. Offerors are therefore encouraged to submit their best

pricing and terms with their initial proposal. Should you have any

questions regarding the Fall Open Season, please contact the Main Bus Program Contracting Team. New offerors are strongly encouraged to set up a one-on-one session with the Main Bus Program Contracting Team to discuss the solicitation

requirements. --- 2026 SPRING OPEN SEASON Update March 5, 2026 In support of the Main Bus Program, GSA is providing the following updates for the 2026 Spring Open Season:

1) Important Dates: Bid Period Open: March 5, 2026 Bid Period Close: March 20, 2026 at 12:00 PM Eastern Time Supplemental Documents Due (if applicable): March 20, 2026 at 12:00 PM Eastern Time

2) The following