History
Karoon spent a decade chasing Australian and South American exploration, then bought producing Brazilian oil at Baúna, added US Gulf of Mexico output, and in 2026 was sanctioning Who Dat East.
2006-2008: Gippsland dry holes and a wider net
In October 2006 Karoon farmed out up to 60% of its Browse Basin permits WA-314-P and WA-315-P to ConocoPhillips, ending a long search for a partner. It placed 12.186 million shares at $1.80 to fund its share of the Browse wells and more drilling in Gippsland. The Gippsland wells failed: the Megascolides-1 sidetrack had very low permeability, Megascolides-2 showed nothing commercial, and the third well, Raniformis-1, was cancelled.
Karoon kept raising money, placing shares at $2.20 and then $3.45, and widened its reach. It agreed to buy Timor Sea permit AC/P8, won five Santos Basin blocks in Brazil, and signed a Peru farm-in over Block Z38. A $3.50 placement followed in 2008. Shares on issue rose from about 93 million at the end of 2006 to about 149 million at the end of 2008. The Browse rig slipped to late 2008.
2009-2011: Browse gas and the first South American oil
Poseidon-1 spudded in January 2009 and found a 317m gross gas-bearing section. A mechanical failure meant it could not be flow tested. Karoon raised A$149.6m at A$6.70 and later A$186.4m at A$7.00. Shares on issue passed 217 million by the end of 2010. Kontiki-1 was disappointing, Poseidon-2 flowed gas at only 850 scf/d, and Kronos-1 flowed an equipment-limited 26 MMscf/d.
A planned Brazilian listing of the South American assets was dropped in November 2010 because of unfavourable markets. That month Petrobras announced a light oil discovery at Maruja-1, in which Karoon held 20%. Karoon also took WA-314-P to 90% from ConocoPhillips for no cash. A federal environmental delay on Browse was cleared in July 2011. By late 2011 Karoon was preparing its largest drilling campaign.
2012-2014: Oil off Brazil, and the Browse sale
Boreas-1 flowed 30 MMscf/d of gas in 2012. Pacific Rubiales took 35% of four Santos Basin blocks for US$40m cash and a well carry. In 2013 Kangaroo-1 and Bilby-1 both found oil, though Emu-1 was wet. A placement of about A$150m at A$5.10 left cash at A$320m. Proteus-1 and Pharos-1 found more Browse gas, but Grace-1 and Poseidon North-1 did not.
In May 2014 Karoon suspended its shares pending a funding announcement, and farmed 50% of WA-482-P to Apache. In June it agreed to sell its 40% of two Browse permits to Origin for up to US$800m. The sale completed in August with US$600m received. Kangaroo-2 found a 250m gross oil column. Dr David Klingner became independent Chairman in December 2014, with founder Robert Hosking moving to Managing Director.
2015-2018: Appraisal, partner trouble and a search for production
Echidna-1 found oil in 2015, but Kangaroo West-1 and Levitt-1 were dry. In 2016 partner Pacific filed for creditor protection, and Karoon bought its 35% interest, taking 100% of the Santos blocks. It reported A$523m cash at the end of 2015 and sought producing assets. A deal to buy Baúna from Petrobras was halted by a court injunction and then withdrawn in March 2017. Tullow agreed to take 35% of Peru Block Z-38. Karoon cut its Echidna and Kangaroo resource estimates in 2018 and booked a A$140m impairment on Kangaroo. The blocks were renamed Neon and Goiá. Klingner died in August 2018, and Bruce Phillips became Chairman from January 2019.
2019-2021: Baúna bought
Karoon agreed in July 2019 to buy Baúna from Petrobras for a US$665m headline price. It raised A$284m at A$0.93, and shares on issue rose from about 246 million to about 553 million. Marina-1 in Peru was dry in February 2020. COVID-19 delayed approvals, and the deal was recast as US$380m firm plus up to US$285m contingent on Brent prices. It completed in November 2020, and Julian Fowles was named CEO to succeed Robert Hosking. Karoon took the Patola development decision in June 2021. It settled a Peru dispute with Pitkin for US$9.6m and drew its first borrowing, a US$160m reserve-based loan.
2022-2025: Patola, Who Dat and the FPSO
Workovers lifted Baúna from 12,600 to about 22,000 bopd in 2022, and Patola first oil came in March 2023, taking output above 40,000 bopd. A flare incident shut the field from 28 March until a 9 May restart. Karoon bought 30% of Who Dat and Dome Patrol in the US Gulf of Mexico for US$720m, funded by about A$480m of equity at A$2.05, completing in December 2023. It issued US$350m of notes at 10.5% in 2024 and began returning capital by dividend and buyback. Who Dat East and South succeeded, while Who Dat West was dry in January 2025. In April 2025 Karoon bought the Baúna FPSO for US$115m plus about US$8m of costs. In June it won six new Santos blocks. Shares on issue were 751.2 million at 31 March 2025.
2025-2026: Operatorship and Who Dat East sanctioned
Baúna suffered well failures through 2025, and output fell to about 19,700 bopd. Carri Lockhart became CEO on 3 November 2025, succeeding Fowles. Karoon took over operating the Baúna FPSO on 27 May 2026. LLOG said Who Dat E manifold production would not return in 2026, so Karoon cut 2026 guidance to 7.2-8.2 MMboe. SPS-92 and PRA-2 were restored, and Baúna reached about 22,000 bopd by 13 July 2026. On 12 August 2026 Who Dat East was sanctioned as a one-well development, with first production in 2H28 and a net cost to Karoon of US$155-165m.
Written from the 234 story beats below (2006 to 12 Aug 2026), which come from the company's own announcements and filings.