**Summary**
SpaceX has filed an amendment to its S‑1 registration ahead of its planned IPO. The amendment warns that future acquisitions, divestitures or other strategic transactions may not deliver the anticipated benefits, synergies or objectives and could require issuing a large amount of new equity. In particular, it reiterates the possibility of a **$60 billion all‑stock acquisition of Cursor** (the company behind Composer 2.5, now integrated into SpaceX’s Grock build), with the consideration consisting of SpaceX Class A common stock. The filing also leaves open the prospect of additional major deals—potentially including a Tesla transaction—since it notes that SpaceX may “issue a significant amount of equity in connection with future transactions.”
Other notable points in the filing and surrounding discussion:
- **Anthropic’s confidential S‑1**: Anthropic filed its own S‑1 today and disclosed a compute‑services agreement with SpaceX AI under which it will pay **$1.25 billion per month** (through May 2029, with a reduced fee in mid‑2026) for access to roughly **325,000 Nvidia GPUs**, exabyte‑scale storage, high‑speed networking and purpose‑built AI infrastructure. The deal includes a 90‑day termination notice that SpaceX requested, giving it substantial leverage.
- **X (formerly Twitter) subscriber growth**: As of December 2025 X had **4.9 million** active paid subscribers; by March 2026 that figure rose to **6.3 million**, with Super Grok/Super Heavy/Light subscriptions more than doubling in three months.
- **Corporate governance tweaks**: The amendment clarifies that Elon Musk’s unvested SpaceX stock options may be voted by him, and it reinforces **mandatory arbitration** provisions to limit shareholder lawsuits—intended to protect SpaceX and its investors from costly litigation similar to past Tesla shareholder actions.
Overall, the S‑1 amendment signals SpaceX’s preparation for a public offering while highlighting its openness to large, equity‑financed acquisitions (Cursor being the lead example), its growing AI‑compute business with Anthropic, strong traction on its X platform, and defensive measures to shield the company from shareholder opposition to future deals.
1. SpaceX amended its S1 filing ahead of its planned IPO.
2. The amendment is Amendment No. 1 to Space Exploration Technologies Corporation’s S1.
3. The filing discusses potential future acquisitions, divestitures, and other strategic transactions.
4. SpaceX disclosed it had the option to either pay approximately $10 billion for an arrangement or acquire Cursor later in 2026 for $60 billion.
5. Cursor is the company behind Composer 2.5.
6. Composer 2.5 is now available in the Rock build and has been integrated into Grock.
7. Cursor previously paid SpaceX AI for access to compute resources used to train Composer 2.5.
8. The amended S1 states that acquisitions, divestitures, or other strategic transactions may not achieve anticipated benefits, synergies, or strategic objectives.
9. The filing mentions the acquisition of Spectrum assets and licenses from Echoar in connection with Starling mobile initiatives.
10. It also references a collaboration on Terraab with Tesla, Intel, or future partners.
11. The filing notes a recent collaboration with Cursor.
12. SpaceX may issue a significant amount of equity in connection with future transactions.
13. The potential acquisition of Cursor would be an all‑stock transaction valued at $60 billion, using Class A common stock.
14. No cash would be paid by SpaceX for the Cursor acquisition; shareholders would experience dilution.
15. Anthropic confidentially filed its own S1 with the SEC and intends to pursue an IPO.
16. Under the SpaceX‑Anthropic agreement, Anthropic agreed to pay SpaceX $1.25 billion per month for up to three years.
17. The compute capacity provided to Anthropic includes approximately 325,000 Nvidia GPUs, hyperscale‑class CPUs, exabyte‑scale storage, and high‑speed networking.
18. After an initial three‑month period, either party may terminate the agreement with 90 days’ notice.
19. The agreement allows SpaceX to monetize a portion of its compute capacity while retaining the ability to reallocate capacity for internal AI initiatives.
20. SpaceX expects to enter into additional similar service contracts for compute capacity with third parties.
21. The 90‑day termination notice window was requested by SpaceX AI, not Anthropic.
22. As of December 2025, X had approximately 4.9 million active paid subscribers (4.1 million X‑premium subscribers and 0.9 million Super Grock/Super Grock Heavy subscribers).
23. By March 31 2026 (three months later), X’s active paid subscribers grew to approximately 6.3 million (4.4 million X‑premium and 1.9 million Super Grock/Super Grock Heavy subscribers).
24. The S1 filing includes provisions for mandatory arbitration of shareholder disputes.
25. The filing clarifies that Elon Musk’s unvested SpaceX stock options may be voted by him.
26. The amendment reinforces SpaceX’s ability to protect itself from shareholders who might oppose acquisitions or other strategic transactions.