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personpersonMark S. CohenMark S. CohenTrial counsel who represented Samuel Bankman-Fried in his 2023 federal criminal case.← All People
Defense· Defense team for Samuel Bankman-Fried

Mark S. Cohen

Trial counsel who represented Samuel Bankman-Fried in his 2023 federal criminal case.

4,540 lines·73 proceedings

About

Served as defense trial counsel and handled witness examinations, evidentiary issues, the defendant's testimony, and the defense closing argument. His mapped examinations included cross-examination and recross of Zac Prince, resumed cross-examination of Nishad Singh, cross-examination of Can Sun, and portions of Samuel Bankman-Fried's direct and redirect examinations.

In one cross-examination, Cohen focused on the distinction between fungible dollars held in bank accounts and FTX's internal account records. He emphasized that customer and Alameda dollars were not labeled within shared accounts. When the prosecution objected to the form of a question characterizing the relationship between a bank account and a ledger adjustment, the court sustained the objection, and Cohen reformulated the question.

Across Days 14 through 17, Cohen conducted portions of Bankman-Fried's direct examination and resumed redirect examination. Those examinations placed the defendant's own testimony into the defense case before Cohen presented the defense closing on Day 18.

In closing, Cohen organized the evidence into a growth period from 2019 through 2021 and a stressed period from June through November 2022. He argued that the later crisis involved differing understandings of the fiat liability and Alameda's ability to meet obligations. He also challenged cooperating and immunized witnesses' accounts by addressing differences in timing, secondhand information, and plea, immunity, or sentencing incentives. Cohen connected the defense theory to good faith, fraudulent intent, proof beyond a reasonable doubt, unanimity, and the court's instructions, while emphasizing that the defense did not bear the burden of establishing innocence.

Attorney insights (5)

Federal Criminal Trial41
Focus

In a cross-examination, Cohen emphasized that customer and Alameda dollars were not labeled within shared bank accounts and sought to distinguish the bank accounts from FTX's internal account terminology. When the prosecution objected to the form of a question about a bank account and ledger adjustment, the court sustained the objection, and Cohen reformulated the question.

Supporting record (1)
Focus

In the Day 18 defense closing, Cohen divided the evidence between a 2019-through-2021 growth period and a June-through-November 2022 period of stress. He argued that the later crisis involved differing understandings of the fiat liability and Alameda's ability to meet obligations, framed good faith as inconsistent with the charged fraud theories, and emphasized the government's burden to prove fraudulent intent and lack of good faith beyond a reasonable doubt.

Supporting record (1)
Credibility challenge

In closing, Cohen argued that jurors should carefully scrutinize cooperating and immunized witnesses whose accounts differed about when they recognized problems, sometimes relied on secondhand information, and were affected by plea, immunity, or sentencing considerations.

Supporting record (1)

Trial Record (73)

FederalFederal Criminal TrialOct 3, 2023 – Nov 2, 2023

Handled significant defense examinations, including portions of Samuel Bankman-Fried's testimony, and delivered the Day 18 defense closing centered on chronology, good faith, reasonable doubt, and scrutiny of cooperating or immunized witnesses.

Day 1

Day 2

ProceduralMedication Access Request7lines spoken

Summary

Defense counsel raised missed Adderall doses and their asserted effect on Mr. Bankman-Fried's focus; the court directed counsel to contact the Bureau of Prisons and confirmed an existing early-production order.

Day 3

Day 4

Day 5

Day 6

Day 7

Day 8

ProceduralRobing Room Medication Discussion6lines spoken

Summary

Defense counsel raised concerns that Bankman-Fried lacked effective Adderall coverage during trial hours. The prosecution relayed a planned extended-release BOP arrangement, and the court required a Monday status report.

Day 9

Day 10

Day 11

Day 12

Day 14

ProceduralAdvice-of-Counsel Evidentiary Hearing14lines spoken

Summary

The defense sought to present lawyer-consultation and industry-practice evidence without asserting a formal advice-of-counsel defense; the government challenged its relevance, and the court reserved its rulings while flagging a possible instruction about a denied subpoena.

Day 15

Day 16

Day 17

Day 18

ClosingDefense Closing Argument — Mark CohenMark S. Cohen3highlights38lines spoken

Summary

The defense argued that good-faith business mistakes, accounting and risk-management failures, and a liquidity crisis—not fraudulent intent—caused FTX's collapse, while challenging cooperating witnesses and seeking acquittal on all counts.

Highlights (3)

otherCohen invoked good faith, reasonable doubt, and unanimity, emphasizing that the government bore the burden on every count and that the defense had no obligation to present evidence.Open in transcript →
evidence eventCohen argued that the fiat@FTX bug, the later-recognized liability, lender repayments, and differing asset valuations supported a liquidity-crisis account rather than proof of criminal intent.Open in transcript →
impeachmentCohen challenged the cooperating witnesses through differences in their accounts, secondhand information, personal conduct, plea agreements, immunity, and potential sentencing incentives.Open in transcript →

Day 19