History
Tamboran went from a 2021 ASX listing and Tanumbirini gas tests to a US-listed Beetaloo operator that, by September 2026, had begun commissioning its first gas plant.
2021-2022: Listing and the first flow tests
Tamboran listed on the ASX on 1 July 2021, raising $61 million at $0.40 a share, with 422,332,923 shares quoted. About $40.4 million was earmarked for the Maverick 1H well and $13.6 million for wells at Tanumbirini. In November it raised about $35 million at $0.37, anchored by US investor Bryan Sheffield.
The Tanumbirini 2H and 3H wells were drilled and fracture stimulated (cracked with pressure to release gas). Their first 30-day rates in February 2022 were 1.7 and 1.5 million cubic feet a day (mmscfd). After production tubing was fitted, 3H averaged 4.4 mmscfd over eight days, the highest sustained rate in the basin at that point. Independent certifier NSAI lifted the company's net contingent resources (gas estimated recoverable but not yet commercial) twice in 2022, to 404 BCF by September.
Legal fights with a landholder, Rallen, were cleared in the Northern Territory Supreme Court, and the final approval for Maverick 1V came in August. In September, Tamboran and Sheffield agreed to buy Origin's Beetaloo permits for $60 million plus a royalty, funded by a placement of about $137 million at $0.21, including $22 million from rig provider Helmerich & Payne. The deal completed on 9 November 2022, leaving Tamboran as operator with about 1.9 million net acres.
2023: Drilling, disappointment and a move to the US
Amungee 2H was drilled in 38 days but flowed only 0.83 mmscfd, well below hopes, with suspected damage near the well. Tamboran raised about $53.2 million at $0.18 in June, plus a convertible note from Helmerich & Payne. It also signed non-binding agreements with bp, Shell and several gas buyers, and chose APA as its preferred pipeline partner.
Shenandoah South 1H was drilled from August, finding the thickest shale seen in the basin. Faster drilling at Amungee 3H cut costs about 30%. A September resource update lifted company-wide 2C resources to 2.0 TCF. Shareholders approved moving the parent company to Delaware, and the scheme took effect on 13 December, with ASX trading continuing through CDIs (share-like securities). A raise at A$0.16 per CDI, including Liberty Energy, brought in about A$55.0 million by January 2024.
2024: Record flow and a New York listing
Shenandoah South 1H set a Beetaloo record: 6.4 MMcf/d over 30 days, normalised to a 1,000 m well length, and 2.9 MMcf/d over 90 days. Tamboran signed a take-or-pay gas sales agreement (the buyer pays whether or not it takes the gas) with the Northern Territory Government for 40 TJ/d. It won Major Project Status in June.
On 27 June it listed on the NYSE, selling 3,125,000 shares at US$24.00 for US$75 million, half the amount first offered. Drilling of SS-2H began in August but a downhole mechanical issue forced a sidetrack, costing about US$5 million extra. A binding deal with APA for the Sturt Plateau Pipeline followed in December.
2025: Setbacks, a record well and a final investment decision
In February, SS-3H stimulation was paused after casing stress, and auditor EY flagged a material uncertainty about the company's ability to continue as a going concern. A US$23 million credit line was secured. In May the company raised about US$55.4 million at US$17.74, and sold Daly Waters Energy a non-operating 100,000-acre interest for US$15 million. It also hired RBC to seek a partner for its Phase 2 area.
The sidetracked SS-2H ST1 then set records, averaging 7.2 MMcf/d over 30 days and 6.7 MMcf/d over 90. In July CEO Joel Riddle stepped down, and Chairman Dick Stoneburner became interim CEO. The Sheffield Group, at about 17.6%, agreed standstill and voting terms to 2028.
On 30 September the joint venture took its final investment decision on the Pilot, and secured an A$179.8 million facility for the compression plant. Tamboran also agreed to buy Falcon Oil & Gas's subsidiaries for 6,537,503 shares plus about US$23.7 million. A three-well drilling batch finished in October, and a US$56.1 million raise at US$21.00 followed, though the CDI purchase plan raised only A$17.42 million against a A$46 million target.
2026: Funding, Falcon and first gas
Todd Abbott became CEO on 15 January. SS-6H flowed 10.3 MMcf/d over 20 days. On 31 March, Tamboran farmed down about 10,000 acres to Daly Waters Energy for a staged earn-in of up to about US$28.5 million.
In April it launched a raise of about US$198 million at US$35.00 a share, finishing at about US$197.8 million, which left pro forma cash of US$298 million. The Falcon acquisition completed on 29 May, lifting holdings to about 2.8 million net prospective acres. Year-end share counts reflect these issues, with 34,960,006 shares reported in 2026.
Stimulation of SS-3H, -4H and -5H finished in July, 178 stages across about 30,000 feet, the basin's largest campaign. On 2 September 2026, gas commissioning began at the compression facility using gas from the five-well SS2 pad, on schedule and within the A$141 million budget. First sales of up to 40 TJ/d to the Northern Territory Government were described as imminent, and flow results from the newest wells were still awaited. The same day, Tamboran signed a non-binding agreement with Liberty to extend frac services for three years.
Written from the 109 story beats below (2021 to 2 Sept 2026), which come from the company's own announcements and filings.