Space stock lock-up expiration dates
Updated from live prices and SEC filings
The next space stock lock-up expiry is SpaceX's main lock-up on 8 Dec 2026, releasing up to about 798 million shares, the remaining 17%. Earlier space IPO lock-ups ended for HawkEye 360 (2 Sept 2026), York Space Systems (28 Jul 2026), Firefly Aerospace (3 Feb 2026) and Karman Space & Defense (12 Aug 2025).
When insiders and pre-IPO investors in each recently listed space company could first sell, and how the shares moved that day. SpaceX releases its shares in stages, tracked day by day on the SpaceX lockup calendar.
When do space stock lock-ups expire?
| Company | IPO | Lock-up end | Status | Move that day |
|---|---|---|---|---|
| SpaceX (SPCX) | 12 Jun 2026 | 8 Dec 2026, main lock-up (staged releases before it) | Upcoming | Not yet |
| HawkEye 360 (HAWK) | 7 May 2026 | 2 Sept 2026 (released early) | Ended | -3.9% |
| York Space Systems (YSS) | 29 Jan 2026 | 28 Jul 2026 | Ended | -5.6% |
| Firefly Aerospace (FLY) | 7 Aug 2025 | 3 Feb 2026 | Ended | +9.6% |
| Karman Space & Defense (KRMN) | 13 Feb 2025 | 12 Aug 2025 | Ended | - |
"Move that day" is the share price change on the lock-up end date, from the previous close.
Notes on each lock-up
- SpaceX: shares are released in stages after quarterly results and on set days, with the main lock-up ending 8 Dec 2026. Elon Musk's own lock-up runs for 366 days.
- HawkEye 360: Released early. The 180-day lock-up would have ended in a quarterly blackout period, so under its terms all locked-up shares became free to sell from 2 September. Some IPO calendars still show 3 November.
- York Space Systems: Standard 180-day lock-up for insiders and pre-IPO shareholders.
- Firefly Aerospace: About 125.9 million shares could become eligible for sale, according to the prospectus. Shares issued in an acquisition stayed restricted until 7 February.
- Karman Space & Defense: Standard 180-day lock-up. The IPO included 14.6 million shares sold by existing holders.
Voyager Technologies (VOYG), which listed in June 2025, is left out because its lock-up end date could not be confirmed from a public source.
Frequently asked questions
What is a lock-up expiration?
When a company goes public, its insiders and pre-IPO investors agree not to sell their shares for a set period, usually 180 days. When that lock-up ends, those shares can be sold for the first time, which can add a large supply of stock to the market.
When is the next space stock lock-up expiration?
SpaceX's main lock-up ends on 8 Dec 2026, releasing up to about 798 million shares, the remaining 17%. Several smaller SpaceX releases come before it; every date is on the SpaceX lockup calendar.
When did the HawkEye 360 lock-up expire?
All locked-up HawkEye 360 shares became free to sell from 2 September 2026, ahead of the standard 180 days, because the original date fell in a quarterly blackout period. Some IPO calendars still list 3 November.
Do space stocks fall when a lock-up ends?
Not always. The table shows how each stock moved on the day its lock-up ended: HawkEye 360 -3.9%, York Space Systems -5.6% and Firefly Aerospace +9.6%. Much of the selling can be priced in beforehand, and holders do not have to sell.
Sources
- HawkEye 360 confirms early lock-up release for 2 September
- MarketBeat: York Space Systems lock-up period to end on 28 July
- TS2: Firefly lock-up ends 3 February
- Karman lock-up period ends 12 August
Lock-up terms from company filings and releases; share moves from Yahoo Finance daily closes. Figures as of 5 Nov 2026, refreshed whenever the site updates. Orbit Alpha is information, not investment advice.
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