Week in Space Data, every Friday.
Investor portfolio, from our funding record
Recorded in our rows as: Altimeter.
Counted rounds
4
Led
2
2 as participant
Companies
1
Disclosed round value
$910M
4 of 4 rounds disclosed; whole rounds, not this investor's share
First deal
2024-02-13
K2 Space
Latest deal
2026-07-30
K2 Space
Altimeter Capital appears on 4 counted private space funding rounds in our records, into 1 company: recorded as lead on 2 and as a participant on 2.
The earliest is K2 Space on 13 February 2024; the latest is K2 Space on 30 July 2026.
4 of the 4 rounds disclosed a size, together $910M. That is the size of the rounds Altimeter Capital took part in, not the amount Altimeter Capital invested: we hold no per-investor allocations and do not estimate them.
The investor most often on the same counted rounds as Altimeter Capital is Lightspeed Venture Partners, on 3 rounds.
4 other recorded transactions naming Altimeter Capital are not counted in this portfolio; each is listed separately with the class that keeps it out (companies not classed as space: 4).
Private funding rounds into space companies that name Altimeter Capital as lead or participant, newest first, each with its source. Round size is the whole round; a blank size was never disclosed and is not estimated.
| Date | Company | Stage | Role | Round size | Source |
|---|---|---|---|---|---|
| K2 SpaceRecorded as Series D | Series D and later | ParticipantAs recorded: Altimeter | $500M | GovCon Wire (opens the source for this round) | |
| K2 Space | Series C | Participant | $250M | Payload (opens the source for this round) | |
| K2 Space | Series B | Lead | $110M | Payload (opens the source for this round) | |
| K2 Space | Series A | Lead | $50.0M | CNBC (opens the source for this round) |
Rounds come from company announcements, regulatory filings and press reports. Amounts, valuations and investors are as reported and may be incomplete or later revised. Not investment advice, and not an offer or solicitation for any security. Full disclaimer
| Stage | Rounds |
|---|---|
| Series A | 1 |
| Series B | 1 |
| Series C | 1 |
| Series D and later | 1 |
| Sector | Rounds |
|---|---|
| Manufacturing | 4 |
| Year | Rounds |
|---|---|
| 2026 | 1 |
| 2025 | 2 |
| 2024 | 1 |
Investors named on the same counted rounds, by the number of rounds shared.
Showing the 10 most frequent of 12 co-investors. The full list is part of a SpaceNexus Research seat.
Other recorded transactions that name Altimeter Capital. Each class below is kept out of every figure on this page by the same rule our quarterly funding editions use; they are listed so nothing is hidden.
| Date | Company | Class | Role | Round size | Source |
|---|---|---|---|---|---|
| Castelion | Private rounds and grants into companies not classed as space (defense and other cross-domain companies without a space subsector) | ParticipantAs recorded: Altimeter | $800M | PR Newswire (opens the source for this round) | |
| Hadrian | Private rounds and grants into companies not classed as space (defense and other cross-domain companies without a space subsector) | Participant | $131M | PR Newswire (opens the source for this round) | |
| Castelion | Private rounds and grants into companies not classed as space (defense and other cross-domain companies without a space subsector) | Lead | $350M | PR Newswire (opens the source for this round) | |
| Hadrian | Private rounds and grants into companies not classed as space (defense and other cross-domain companies without a space subsector) | Participant | $260M | CNBC (opens the source for this round) |