Company: MSTR
Filing Date: 2025-01-27
Form Type: S-3ASR
Source: 0001193125-25-012707
Chunk: 1

Company: Strategy Inc
Filing Date: 2025-01-27
Form: S-3ASR
Chunk 1
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 box. ☒ If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-acceleratedfiler, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2of the Exchange Act.

| Large accelerated filer |     | ☒ |     | Accelerated filer         |     | ☐ |
| Non-accelerated filer   |     | ☐ |     | Smaller reporting company |     | ☐ |
|                         |     |   |     | Emerging growth company   |     | ☐ |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

PROSPECTUS

Debt Securities

Class A Common Stock

Preferred Stock

Depositary Shares

Warrants

Units

We may offer and sell securities from time to time in one or more offerings. This prospectus describes the general terms of these securities
and the general manner in which these securities will be offered. We will provide the specific terms of these securities in supplements to this prospectus. The prospectus supplements will also describe the specific manner in which these securities
will be offered and may also supplement, update or amend information contained in this document. You should read this prospectus and any applicable prospectus supplement before you invest.

We may offer these securities in amounts, at prices and on terms determined at the time of offering. The securities may be sold directly to
you, through agents, or through underwriters and dealers. If agents, underwriters or dealers are used to sell the securities, we will name them and describe their compensation in a prospectus supplement. No securities may be sold without delivery of
this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.

Our class A
common stock is listed on The Nasdaq Global Select Market under the symbol “MSTR.”

Investing in our securities