Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124285
Chunk: 79

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 79
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 to the laying of venue of any suit, action or other proceeding in the specified courts and to irrevocably and unconditionally waive and
agree not to plead or claim any such suit, action or other proceeding has been brought in an inconvenient forum.

Definitions

“Affiliate” has the meaning set forth in Rule 144 under the Securities Act as in effect on the date we first issue the notes.

“Bid solicitation agent” means the person who is required to obtain bids for the trading price in accordance with the provisions described under the
caption “—Conversion Rights—When the Notes May Be Converted—Conversion Upon Satisfaction of Note Trading Price Condition” and in the definition of “trading price.”

“Board of directors” means our board of directors or a committee of such board duly authorized to act on behalf of such board.

S-51

“Business day” means any day other than a Saturday, a Sunday or any day on which the Federal
Reserve Bank of New York is authorized or required by law or executive order to close or be closed.

“Capital stock” of any person means any and
all shares of, interests in, rights to purchase, warrants or options for, participations in, or other equivalents of, in each case however designated, the equity of such person, but excluding any debt securities convertible into, or exchangeable
for, such equity.

“Close of business” means 5:00 p.m., New York City time.

“Conversion price” means, as of any time, an amount equal to (i) $1,000 divided by (ii) the conversion rate in effect at such time.

“Conversion rate” initially means 224.9213 shares of our common stock per $1,000 principal amount of notes, which amount is subject to
adjustment as described above under the caption “—Conversion Rights.” Whenever in this prospectus supplement we refer to the conversion rate as of a particular date without setting forth a particular time on such date, such reference
will be deemed to be to the conversion rate immediately after the close of business on such date.

“Daily cash amount” means, with respect to
any VWAP trading day, the lesser of (i) the applicable daily maximum cash amount; and (ii) the daily conversion value for such VWAP trading day.

“Daily conversion value” means, with respect to any VWAP trading day, one-30th of the product of
(i) the conversion rate on such VWAP trading day; and (