David Bartholomew has served as Chair of the Board since September 2021. He currently serves as a non-executive director on the boards of Atlas Arteria (ASX-listed global owner and operator of toll roads), Endeavour Energy (NSW electricity distributor), Atmos Renewables (Independent Non-Executive Chair, owner and developer of renewable generation assets in Australia), and GHD (global engineering services firm).
Mr. Bartholomew's executive background includes serving as Chief Executive Officer of DUET Group, where he oversaw the ASX-listed company's transition to a fully internalized management and governance structure. During his tenure at DUET, he was appointed to the boards of the company's portfolio companies including United Energy Distribution (Victorian electricity distribution), Multinet Gas (Victorian gas distribution), the Dampier to Bunbury Natural Gas Pipeline, Energy Developments Limited (remote and waste-to-energy electricity generation), and Duquesne Light (Pittsburgh, USA electricity distribution). He has also held executive roles at Hastings Funds Management, Lend Lease, The Boston Consulting Group, and BHP Minerals.
Mr. Bartholomew has served on numerous corporate boards including Vector Limited, Power and Water Corporation (NT), Keolis Downer, Dussur (Saudi Arabia), The Helmsman Project, Interlink Roads, Statewide Roads, Epic Energy, Sydney Light Rail, Port of Geelong, various forestry companies, and Nextgen Networks. He holds a Bachelor of Economics (Honours) degree from Adelaide University and an MBA from The Australian Graduate School of Management.
Biography extracted from IREN DEF 14A filed 2025-10-06 View cached copy (2026-08-31)Live source ↗
Photo: www.iren.com (IREN official site) · retrieved 2026-08-31 · cached copy · match confidence high
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 |
|---|---|---|---|
| IREN | Director | 2025-07 → present (1y 2mo) | 2 |
Show 2 underlying filings | |||
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 | 57,329 | $0 | - | $0 | Flat | 2 | $2.56M | $0 |
| 2026 | 8,369 | $0 | - | $0 | Flat | 1 | $373.9K | $0 |
| 2025 | 48,960 | $0 | - | $0 | Flat | 1 | $2.19M | $0 |
| 2025-Q3 | 48,960 | $0 | - | $0 | Flat | 1 | $2.19M | $0 |
| 2026-Q3 | 8,369 | $0 | - | $0 | Flat | 1 | $373.9K | $0 |
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 2026-09-04); 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 |
|---|---|---|---|---|---|
| 2026-07-01 | IREN | Grant / award / vesting · Ordinary Shares | 8,369 | - | $373.9K |
| 2025-07-01 | IREN | Grant / award / vesting · Ordinary Shares | 48,960 | - | $2.19M |