Texas operator · P-5 103921
Mountainside Energy Operating, L
Facts and their sources. No rating, no opinion.
The record
What the state's files show about Mountainside Energy Operating, L
Railroad Commission record
Who the state lists
The Railroad Commission lists this company as an operator: it reports wells and leases in Texas.
- Name on file
- MOUNTAINSIDE ENERGY OPERATING, L
- Operator number (P-5)
- 103921
- P-5 status
- Active
- Organization type
- Limited liability company (code not in the RRC's 2014 layout; inferred from the names)
- Location
- Pampa, TX
- Mailing city
- Pampa, TX
- Activities filed
- Gas Operator, Oil Operator
- Last P-5 received
- January 21, 2026
- Record built
- January 21, 2026
- Refiling required
- Yes
Source: Railroad Commission of Texas, P-5 Organization Report data set, as of September 22, 2026.
Owner relations
How to reach Mountainside Energy Operating, L as an owner
Not checked yet
We have not checked Mountainside Energy Operating, L’s owner-relations desk yet. Here is how owners usually find it:
- Look at a recent check stub or statement. The phone number and address printed on it usually reach the owner relations department.
- Search the company’s own website for “owner relations” or “royalty owners”. Larger operators have a page and an online owner portal.
- The Railroad Commission file above has the company’s mailing address. A letter sent there reaches the company, though not always the right desk.
- Put your owner number and the property name or number on every letter and call.
Production
What the state's reports show
- Oil, last 12 months
- 20,606 barrels
- Gas, last 12 months
- 445,186 mcf
Oil reported each month, in barrels
- Jun 20261,651
- May 20264,559
- Apr 20264,710
- Mar 20265,134
- Feb 20264,552
Source: Railroad Commission of Texas, production data query, as of June 1, 2026.
Drilling permits
Permits filed with the state
0 drilling permits in the last three years. A permit is permission to drill. It is not a well.
Source: Railroad Commission of Texas, drilling permit records.
Leases
Leases this company operates
68 leases on the state record, 38 with production in the last twelve months. The largest by production:
- Keller, P. M.Wheeler County · 28,508 bbl of oil
- Bush, W. B.Wheeler County · 21,229 bbl of oil
- Hobart RanchHemphill County · 26 bbl of oil
- Williams, S. K. UnitWheeler County · 230 bbl of oil
- Laycock, C. K. UnitWheeler County · 530 bbl of oil
- Warren, G. C. UnitWheeler County · 29 bbl of oil
- Johnson, WestWheeler County · 3,407 bbl of oil
- Trout, BenWheeler County · 18 bbl of oil
- City of Shamrock UnitWheeler County · 134 bbl of oil
- CampbellHemphill County · 51,048 mcf of gas
- Johnson, EastWheeler County · 1,745 bbl of oil
- Lacy, MeekMoore County · 38,564 mcf of gas
- Beene, D.o. UnitWheeler County · 38,451 mcf of gas
- Etter, T. H.Hansford County · 1,386 bbl of oil
- Isaacs-SimpsonHemphill County · 40 bbl of oil
- IsaacsHemphill County · 101 bbl of oil
- Isaacs -210-Hemphill County · 61 bbl of oil
- Sanders Una UnitWheeler County · 23,096 mcf of gas
- Isaacs 208Hemphill County · 22 bbl of oil
- RossHemphill County · 219 bbl of oil
- Morton, H. E.Hansford County · 34 bbl of oil
- Gulf-Mesa SappingtonHemphill County · 17,716 mcf of gas
- FlowersHemphill County · 15,786 mcf of gas
- Isaacs -209-Hemphill County · 61 bbl of oil
- IsaacsHemphill County · 11 bbl of oil
Operator changes
Leases this company took over or handed over
67 taken over and 0 handed over since the state's history begins; 67 and 0 in the last twelve months. The month is the first month the change shows in production reports.
- Took over Isaacs-Simpson, Hemphill CountyJun 2026 · from Pantera Energy Company
- Took over Ross, A.a., Hemphill CountyMay 2026 · from Pantera Energy Company
- Took over Schiff-Lawrence, Hansford CountyMay 2026 · from Pantera Energy Company
- Took over Ross, A. A., Hemphill CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Bush, W. B., Wheeler CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Jarvis, Billie, Hemphill CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Joiner, C.h., Hansford CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Jackson, S. P., Hansford CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Joiner, Hansford CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over City of Shamrock Unit, Wheeler CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Jarvis -213-, Hemphill CountyFeb 2026 · from Highmark Energy Operating, LLC
- Took over Campbell, Hemphill CountyFeb 2026 · from Highmark Energy Operating, LLC
Use it
Follow this company, or check a paper it sent you
New permits and production
One email a week when Mountainside Energy Operating, L files a drilling permit, completes a well or reports first production. Free with an account.
A paper from this company
A division order, a lease, a buyout offer or a letter: upload it and we say what it is, what it asks and which terms deserve a question.
FAQ
Questions people ask
Who is Mountainside Energy Operating, L?
The Railroad Commission lists Mountainside Energy Operating, L as operator number 103921, P-5 active, in Pampa, TX. Its leases reported 20,606 barrels of oil and 445,186 mcf of gas in the last twelve months.
How much oil and gas did Mountainside Energy Operating, L report?
In the last twelve months the leases Mountainside Energy Operating, L operates reported 20,606 barrels of oil and 445,186 mcf of gas to the Railroad Commission, through June 1, 2026. It has 68 leases on the state record, 38 with production in that time.
I got a letter or an offer from Mountainside Energy Operating, L: what should I do?
Do not sign or call yet. Keep every page and the envelope, compare the paper with your deed, lease and last statements, and answer in writing. You can upload the letter to have it read: it says what kind of paper it is, what it asks, and which terms deserve a question, quoting the words they come from.
Where does this page's information come from, and how current is it?
The record is the Railroad Commission's P-5 Organization Report file, dated September 22, 2026. The entity is the Comptroller's franchise tax file. Production, permits and leases are the Commission's own reports. The page shows no rating and no opinion.
Related
Keep going
- Texas dataTexas oil and gas companiesOperators and buyers: the state's record, permits, leases, production.
- HelpI got a letter from an oil companyUpload it. We say what it is, what it asks and what to look at.
- ToolTexas well watchPermit, completion, first production and when the first check is due.
- Texas dataTexas operator changesWho took over whose leases in the last 24 months.
- CheckCheck my statementUpload a stub. Every month against the state record.
- HelpTexas division ordersWhat you may sign, what you may refuse, what to check.
Sources
Primary sources, opened on 29 September 2026. Statute text is the current version on statutes.capitol.texas.gov.