"In the fourth quarter 2020, the Company generated over 157 bitcoins. The Company last sold bitcoin on October 21, 2020, and since then, has been accumulating or “hodling” all bitcoin generated. As of December 31, 2020, the Company held approximately 126 bitcoins."

"Purchased 4,812.66 bitcoins for $150 million (average purchase price of $31,168 per BTC)"

"As of March 15, 2021, at 6 p.m. EST, Marathon held approximately 5,066.66 bitcoins, of which 4,812.66 are held in an investment fund of one while the other 254 were generated by the Company’s operations."

"As of May 6, 2021, held approximately 5,324 bitcoins, each of which had a market price of approximately $56,135; as a result, the approximate value of Marathon’s bitcoins held as digital currencies was approximately $298.8 million"

"As of June 30, 2021, held approximately 5,784 bitcoins, each of which had a market price of approximately $34,856; as a result, the approximate fair market value of Marathon’s bitcoins held as digital currencies was approximately $201.6 million"

"As of September 30, 2021, held approximately 7,035 bitcoins, each of which had a market price of approximately $43,718; as a result, the approximate fair market value of Marathon’s bitcoins held as digital currencies was approximately $307.6 million"

Discrepancy between press release and 10-K.

Press Release: "As of December 31, 2021, held approximately 8,133 bitcoin, each of which had a market price of approximately $46,208; as a result, the approximate fair market value of Marathon’s bitcoin held as digital currencies was approximately $375.8 million"

10-K: "As of December 31, 2021, we held approximately 8,115 bitcoin, including the 4,794 bitcoin held in the investment fund."

"As of February 28, 2022, held approximately 8,956 bitcoin, of which 4,813 are held in an investment fund of one while the other 4,143 were generated by the Company’s operations (*unaudited)"

"As of March 31, 2022, cash on hand was $118.5 million. Total liquidity available to the Company, defined as cash on hand plus available revolving credit facilities, was $218.5 million. Additionally, the Company held approximately 9,374 bitcoin with an approximate fair market value of $427.7 million at March 31, 2022."

"Increased total Bitcoin holdings to 10,055 BTC as of June 30, 2022, which are now held directly after the Company unwound its investment in NYDIG Digital Assets Fund III, LP (“the Investment Fund”)"

At September 30, 2022, the Company held approximately 10,670 bitcoin with a carrying value of $197.2 million. The bitcoin were classified on the balance sheet as digital currencies (6,842 bitcoin or approximately $126.4 million carrying value) and digital currencies, restricted (3,828 bitcoin or approximately $70.8 million carrying value).

At December 31, 2022, the Company held approximately 12,232 bitcoin on its balance sheet with a carrying value of $190,717 thousand. Approximately 4,416 of these bitcoin ($68,875 thousand book value) were being utilized as collateral for borrowings and classified as digital assets restricted. The remaining 7,816 bitcoin, with $121,842 thousand book value, were unrestricted bitcoin holdings classified as digital assets.

From quarterly report:

As of March 31, 2023, the Company held approximately 11,466 bitcoin, classified on the consolidated condensed balance sheet as “Digital assets”, with a carrying value of $189,087 thousand.

https://www.mara.com/

https://ir.mara.com/news-events/press-releases/detail/1356/marathon-digital-holdings-announces-bitcoin-production-and

https://ir.mara.com/news-events/press-releases/detail/1359/marathon-digital-holdings-announces-bitcoin-production-and

https://ir.mara.com/news-events/press-releases/detail/1361/mara-announces-bitcoin-production-and-mining-operation