Fred S. Zeidman has served as Co-Chairman and Chief Executive Officer of Cipher Mining (formerly Good Works Acquisition Corp.) since June 2020. He is also Chairman of Gordian Group LLC, a U.S. investment bank specializing in board-level advice in complex financial matters, a position he has held since December 2014. Additionally, he serves as a director of Prosperity Bank in Houston.
His prior leadership positions include: Chairman and CEO of Unibar Corporation (the largest domestic independent drilling fluids company, sold to Anchor Drilling Fluids in 1992), President and CEO of Crown Services, Intersystems, and Interpak Systems, Chairman, CEO and President of Seitel Inc. (a Houston-based onshore seismic data provider where he led the company turnaround), Chief Bankruptcy Trustee of AremisSoft Corp., Chief Restructuring Officer of TransMeridian Exploration Inc., Director of NRG Energy's REMA subsidiary, Lead Director of Straight Path Communications, and CFO of the Texas Heart Institute (where he managed financial restructuring and coordinated the integration of St. Luke's Episcopal Hospital System and Baylor College of Medicine into Catholic Health Initiatives).
Mr. Zeidman holds a Bachelor's degree from Washington University in St. Louis and an MBA from New York University. He served as Chairman of the US Holocaust Memorial Council (appointed by President George W. Bush in 2002, serving until 2010; now Chairman Emeritus) and as Chairman of the University of Texas Health Science System Houston (Chairman Emeritus). He is a Director of the Texas Heart Institute, a board member of the Development Corp of Israel (Israel Bonds), and previously served on the Board and Executive Committee of the National World War II Museum.
Biography extracted from Cipher Mining 10-K filed 2021-02-17 View cached copy (2026-09-27)Live source ↗
Roles
Contiguous filings for the same role are collapsed into a single tenure span. Click a row to see the underlying filings.
| Company | Role | Tenure | Filings |
|---|---|---|---|
| Cipher Mining | Chief Executive Officer, Director | 2020-10 → present (6y 1mo) | 1 |
| Cipher Mining | CEO, Director | 2021-03 → present (5y 8mo) | 1 |
Insider transactions
Totals for this person
| Bucket | Invested (shares) | Invested (USD) | Divested (shares) | Divested (USD) | Net direction | Txns | Invested @ last price | Divested @ last price |
|---|---|---|---|---|---|---|---|---|
| All time | - | $0 | 255,000 | $0 | Flat | 1 | $0 | $1.86M |
| 2021 | - | $0 | 255,000 | $0 | Flat | 1 | $0 | $1.86M |
| 2021-Q1 | - | $0 | 255,000 | $0 | Flat | 1 | $0 | $1.86M |
Invested = shares acquired (buys, grants, option exercises) — insider adding to the position. Divested = shares reduced (sells, dispositions, tax-withholding) — cash flowing TO the insider. Net direction shows which side wins on dollar terms in each bucket. % of holder's stake not yet computed (pending Form 3/4 holdings ingest). See methodology. The two @ last price columns restate the same share counts at the most recent share price we read (close of 2026-10-30); they are a valuation, not a cash flow, and they move every day the market does.
All transactions
| Date | Company | Kind | Shares | Amount (USD) | Value @ last price |
|---|---|---|---|---|---|
| 2021-03-10 | Cipher Mining | Bona fide gift | 255,000 | - | $1.86M |