Momentus
MNTSMomentus was a commercial in-space transportation company that developed the Vigoride orbital service vehicle for satellite deployment and hosted payload services using water plasma propulsion.
- Founded
- 2017
- Headquarters
- San Jose, United States
- Stage
- Public
- Ownership
- Listed
- Market cap
- $89M-16.9% 30d
- Last round
- Undisclosed round · $1.6M2025-09
- Investors
- 1
Quick Facts
About Momentus
Momentus was a commercial in-space transportation company that developed the Vigoride orbital service vehicle for satellite deployment and hosted payload services using water plasma propulsion. The company went public via SPAC in 2021 but faced severe regulatory and financial difficulties. In 2021, the SEC charged the company and its co-founder with making false and misleading statements about the technology's performance. The company remained listed on Nasdaq (MNTS) and carried out a 1-for-17.85 reverse stock split in December 2025 to regain compliance with the exchange's minimum bid price.
Vigoride flew several missions to ISS but the broader orbital transfer vehicle business struggled to reach commercial viability. As of 2025-2026 the company has dramatically scaled back operations.
Products and product lines
| Product | Line | Note |
|---|---|---|
| Vigoride Orbital Service Vehicle (OSV) | In-space transportation / satellite bus | Momentus's primary spacecraft platform for in-space delivery and hosted-payload services; the seventh unit, Vigoride-7, deployed from SpaceX's Transporter-16 rideshare on 13 April 2026. |
| Microwave Electrothermal Thruster (MET) | In-space propulsion | Proprietary water-propellant propulsion system used on Vigoride vehicles for orbit-raising and inclination changes. |
| Tape Spring Solar Array (TASSA) | Spacecraft component | Momentus-developed deployable solar array technology demonstrated in flight on the Vigoride-6 mission. |
| Delivery Service | In-space logistics service | Point-to-point transportation and deployment of a customer's payload into its desired orbit using the Vigoride vehicle. |
| Hosted Service | In-space logistics service | Orbit transfer and maintenance, attitude control, and power/communications interfaces provided to a hosted customer payload for the duration of its mission. |
Timeline
- 2025 Momentus completes a warrant-inducement transaction on 9 December in which a holder exercised 4,862,058 warrants at $0.77/share for about $3.74 million in gross proceeds, in exchange for new inducement warrants at the same price. [source]
- 2025 Momentus executes a 1-for-17.85 reverse stock split effective 17 December 2025 (shares outstanding reduced from about 24.9 million to about 1.4 million) specifically to regain compliance with Nasdaq's $1.00 minimum-bid-price rule, under authority stockholders granted on 17 September 2025. [source]
- 2026 Momentus prices a $5.0 million private placement on 5 January 2026 (925,926 shares plus warrants at $5.40/share) and reduces the exercise price on existing warrants from $13.74 to $5.40. [source]
- 2026 Momentus exchanges a $500,000 convertible promissory note for a replacement note on 9 January 2026, cutting its conversion price from $29.8095 to $10.00 per share. [source]
- 2026 Momentus further reduces the conversion price on a junior secured note held by Yield Point NY LLC (roughly $1.6 million outstanding) from $19.9206 to $5.28 per share, effective 20 February 2026. [source]
- 2026 Vigoride-7 deploys from SpaceX's Transporter-16 mission at 520 km altitude on 13 April 2026 and achieves early milestones — power-on, solar-array deployment, two-way communications with the San Jose mission operations center, and propulsion-system checkout. [source]
- 2026 Momentus dismisses auditor Frank, Rimerman + Co. LLP and engages Baker Tilly US, LLP effective 11 August 2026; the prior auditor's report on fiscal 2024 had included a going-concern qualification, though a related internal-control material weakness was remediated as of 31 December 2025. [source]
Funding history
3 events · $260M raised| Date | Round | Amount | Investors | Source |
|---|---|---|---|---|
| 2025-09-25 | Undisclosed round | $1.6M | —Form D filed 2025-10-02 by Momentus Inc.: $1.6M sold of a $1.6M offering (first sale 2025-09-25). | sec.gov |
| 2025-04-24 | Undisclosed round | $248K | —Form D filed 2025-05-09 by Momentus Inc.: $248K sold of an open-ended offering (first sale 2025-04-24). | sec.gov |
| 2021-08-12 | SPAC | $260M | Stable Road Acquisition CorpSPAC merger with Stable Road Acquisition | momentus.space |
Investors
From the sourced rounds above. Investors with two or more deals in the directory link to a portfolio page.
Team
Signals
- Market cap, 90 days
- -66.2%
- Verification
- Verified 2026-09-10
Categories & Capabilities
Industry Categories
Stock Performance
MNTS · Daily close data
Funding
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Frequently asked about Momentus
Quick answers to the questions readers most often search for.
- When was Momentus founded?
- Momentus was founded in 2017 in United States.
- Where is Momentus headquartered?
- Momentus is headquartered in San Jose, United States.
- What does Momentus do?
- Momentus was a commercial in-space transportation company that developed the Vigoride orbital service vehicle for satellite deployment and hosted payload services using water plasma propulsion. The company went public via SPAC in 2021 but faced severe regulatory and financial difficulties. In 2021, the SEC charged the …
- Is Momentus publicly traded?
- Yes. Momentus trades under the ticker MNTS on NasdaqCM.
- What sector does Momentus operate in?
- Momentus works in in space services, Spacecraft and Propulsion, plus 2 other space-industry sectors.
Sources
The structured fields on this page (founding year, location, sector, status, listing) and the profile text are drawn from the sources below. How profiles are drafted and checked is described in our methodology.
- Official website (momentus.space)
- Market data via Yahoo Finance (MNTS) · retrieved 2026-09-14
- Company LinkedIn page
- SEC Form D · retrieved 2026-09-04
- SEC Form D · retrieved 2026-09-04
- SEC 10-K · retrieved 2026-09-04
- Wikidata / Wikipedia · retrieved 2026-09-04
- Merged duplicate entry momentus-vigoride · retrieved 2026-09-05
- GLEIF LEI record · retrieved 2026-09-05
- SEC 8-K: Momentus warrant inducement transaction (filed 10 Dec 2025, report date 9 Dec 2025) · retrieved 2026-09-10
- SEC 8-K: Momentus 1-for-17.85 reverse stock split effective 17 Dec 2025 · retrieved 2026-09-10
- SEC 8-K Exhibit 99.1: Momentus prices $5.0 million private placement (5 Jan 2026) · retrieved 2026-09-10
- SEC 8-K: Momentus convertible note exchange, conversion price cut to $10.00 (9 Jan 2026) · retrieved 2026-09-10
- SEC 8-K: Momentus junior secured note conversion price reduced to $5.28 (20 Feb 2026) · retrieved 2026-09-10
- SEC 8-K Exhibit 99.1: Vigoride-7 achieves major technical milestones (13 Apr 2026) · retrieved 2026-09-10
- SEC 8-K: Momentus changes independent registered public accounting firm (11 Aug 2026) · retrieved 2026-09-10
- Funding: SPAC merger with Stable Road Acquisition (2021-08-12) · retrieved 2026-09-04
Data Accuracy Notice: Information about Momentus is compiled from publicly available sources including company websites, press releases, regulatory filings, and industry reports. Data is reviewed periodically but may not reflect the most recent developments.