Rosetta Resources 8K Regulation FD Disclosure | SEC 1 Oct 09

2009

IPAA OGIS San Francisco

Michael J. Rosinski

Experienced team driving successful transformation

Significant upside from unique formula

Core assets re-engineered for predictable growth from low risk inventory

Conservative financial approach balances growth and returns

Catalysts provide exciting opportunity to participate in new play entry

Very attractive risk-reward profile for a company our size

Trades at discount on valuation basis to companies with resource-based
business model

It’s a Great Time to Look at Rosetta

2009 Accomplishments
Not Missing a Beat…

Refinanced existing debt

Increased Eagle Ford acreage by 60% to over 40,000 net acres

Drilled 3 Eagle Ford wells

Springer Ranch #1H produced 39 MMcf during first seven days

Gates #9 well completion pending

Vela #1 set up for horizontal drilling

Drilled and cored first Bakken Well; 3 additional wells permitted

Added 2010-2011 hedges

5 BBtu/d Rocky Mountain hedges at $5.72

10 BBtu/d collars at $5.75-$7.55

Completed non-core asset sales of $20MM

Gulf of Mexico & State Waters
27 Bcfe

Sacramento Basin
111 Bcfe

Other Areas
22 Bcfe

Proved Reserves
398 Bcfe

2008 Year End Reserves

Rockies
78 Bcfe

South Texas
160 Bcfe

Rockies
164 Bcfe

South Texas
74 Bcfe

Gulf of Mexico
10 Bcfe

State Waters
3 Bcfe

Sacramento Basin
41 Bcfe

Other Areas
7 Bcfe

2008 Year End Capital Inventory

71	BCFE PUD
228	BCFE Probable & Possible
299	Total BCFE

Blocking & Tackling

Sacramento Basin “By-Passed” Resources

Economies of Scale

Denver Julesburg Basin Niobrara Chalk

Opportunistic Growth

South Texas Eagle Ford Shale

Creative Growth

Alberta Basin Bakken Shale

Additional Resource Potential
Beyond Reserves & Inventory

Blocking & Tackling
Sacramento Basin: “The ideal basin for resource assessments…”

Rio Vista Gas Unit

Key Statistics

Discovery Date: 1936

Aerial Extent: 30,500 acres

Gross Cumulative Production: 3.6 TCFE

Number of Producing Horizons: 16

Number of Wells: 303

Producing: 143

Idle 160

Blocking & Tackling
The Playground: 16 Proven Hydrocarbon Reservoirs

Depth Range

2,500 - 13,000’

MIDDLE CAPAY

Tight Sand Example

Blocking & Tackling
The Game: “By-Passed” Resources Through Identification and Technology Applications

ACTUAL PROGRAM RESULTS
Group 1 (6 well program)
Well	IP (Mcfe/d)
RVGU 242	475
RVGU 222	200
RVGU 296	130
RVGU 299	1300
Jordan 8	1250
RVGU 269U	550
Group 1 Average	651
Group 2 (14 well program)
Well	IP (Mcfe/d)
RVGU 294	660
RVGU 208	1282
RVGU 167	450
RVGU 295	892
Welch 17	1046
Welch 14	1041
RVGU 301	536
Detering 2	1265
Detering 7	1299
RVGU 247	1200
Group 2 Average	967

Blocking & Tackling
The Results: “New production yielding unique reserves…”

30 miles

Denver

Denver Julesburg Basin Niobrara Play

Rosetta Resources’ Position:

Net Undeveloped Acreage: 90,000 acres

Net Projects: 1750 wells*

Net Resource Potential: 350 Bcfe

* Not including the 500 locations already in inventory

Economies of Scale
DJ Basin: Niobrara Chalk Resource Play

NIOBRARA INFILL PILOT PROGRAM

160 acre Block

Typical well results

$180,000 CWC

300 mmcf EUR

100% avg. WI; 80% avg. NRI

200 mcfpd initial rate

>20% AFIT IRR @ $5.00 NYMEX

Optimizing Future Development

Resource potential (advanced open hole logging)

Drainage patterns (effective tighter spacing)

Stimulation orientation (micro-seismic)

Pressure drawdown (pressure observation wells)

Optimum stimulation (differing technical designs)

Houston

Gulf of Mexico

Mexico

Rosetta

Oil Gas Oil

Opportunistic Growth
South Texas Eagle Ford Shale Resource Play

Cretaceous Time (80ma)

Opportunistic Growth
South Texas Eagle Ford Shale Resource Play

Eagle Ford Shale Play

Rosetta Resources’ Position:

Net Undeveloped Acreage: 40,000 acres

Net Projects: 250 wells

Net Resource Potential: 750 Bcfe

Note: Assumes 160 acre development and 4 Bcfe gross EUR per well.

Rosetta Eagle Ford Wells

Industry Eagle Ford Horizontal Wells

Springer Ranch #1H

Vela #1

Gates Ranch #9-5H

Devonian Time (350ma)

Creative Growth
Alberta Basin Bakken Shale Resource Play

Williston Basin Analogs

ALBERTA
BASIN

WILLISTON
BASIN

Elm Coulee

Nesson Anticline

Creative Growth
Alberta Basin Bakken Shale Resource Play

Alberta Basin Bakken Play

Rosetta Resources’ Position:

Net Undeveloped Acreage: 231,000 acres

Net Projects: 723 wells*

Net Resource Potential: 60 - 300 MMBOE

* 320 acre development

Cut Bank

Rosetta Well Locations (staked and permitted)

1st “Resource Assessment” well

Additional Resource Potential*

	Areal Extent (Net Acres)	Projects (Project Count)	Net Resource (Bcfe)
Sacramento Basin “By-Passed” Resources	30,000	375	100
DJ Basin Niobrara Chalk	90,000	1,750	350
South Texas Eagle Ford Shale	40,000	250	750
Alberta Basin Bakken Shale	231,000	723	600
TOTAL	391,000	3,098	1,800

* Summary of projects in addition to our PUD, probable & possible inventories; leasehold is either assigned and/or committed.

Amended Revolving Credit Facility

Maximum credit amount increased to $600MM

Borrowing base reset to $375MM

Maturity date is July 1, 2012

Amended Second Lien Term Loan

Borrowing increased to $100MM

Maturity date is October 2, 2012

Liquidity from unused Revolver capacity and cash at $225MM at 6/30/09

Financial Status

2009

Protected 2009 natural gas production with 52 BBtu/d swapped at an
average price of $7.65 and 5 BBtu/d of collars at $8.00 by $10.05

2010-2011

Protected 2010 natural gas production of 10 BBtu/d swapped at $8.31

Swapped 5 BBtu/d in DJ Basin from July 2010 to December 2011 at
$5.62

Added 10 BBtu/d of collars from July 2010 to December 2011 at $5.75
by $7.65

Hedge Status

Maintain balance between cash flow and capital activity

Re-engineer existing opportunity set

Sacramento Basin workovers

Lobo program

Possible DJ Basin program

Evaluate new play opportunities

Eagle Ford

Bakken

Pursue bolt-on/strategic acquisitions

Selective sale of non-core assets

Focus on cost reductions in all business areas

2009-2010 Business Plan

Experience team driving successful transformation

Significant upside from unique formula

Core assets re-engineered for predictable growth from low risk inventory

Conservative financial approach balances growth and returns

Catalysts provide exciting opportunity to participate in new play entry

Very attractive risk-reward profile for a company our size

Trades at discount on valuation basis to companies with resource-based
business model

It’s a Great Time to Look at Rosetta

Rosetta Resources Inactive 8-KRegulation FD Disclosure