REFERENCE CASE

Issued quarterly by Reservoir GmbH, Hamburg

PAGE

2026-09-30

One quarterly case, as issued and signed.

EXHIBIT K.1 · THE CASE

Where Brent could be in September 2027

MONTHLY AVERAGE PRICE, US$ PER BARREL

Live case of 30 September 2026, signed 8 October 2026

All cases in the record →
LOW64.651 in 10 chance it ends below
MIDDLE102.52as likely above as below
HIGH135.921 in 10 chance it ends above
6080100120140Oct 24Jan 25Apr 25Jul 25Oct 25Jan 26Apr 26Jul 26Oct 26Jan 27Apr 27Jul 27fair value 93.51case 30 Sep 2026September 114.16high 135.92middle 102.52low 64.65
Brent, monthly average (FRED)signed range, low to highmiddlefair value from the fundamentals, month by month (after the case date: kept at 93.51, as the case assumes)

EXHIBIT K.2 · MONTHLY CHECK

How the case is doing, month by month

automatic, no new forecast

Checks start in mid-November 2026, with the October average.

OctOctober 2026: not checked yet. Checked after 10 November 2026.NovNovember 2026: not checked yet. Checked after 10 December 2026.DecDecember 2026: not checked yet. Checked after 10 January 2027.JanJanuary 2027: not checked yet. Checked after 10 February 2027.FebFebruary 2027: not checked yet. Checked after 10 March 2027.MarMarch 2027: not checked yet. Checked after 10 April 2027.AprApril 2027: not checked yet. Checked after 10 May 2027.MayMay 2027: not checked yet. Checked after 10 June 2027.JunJune 2027: not checked yet. Checked after 10 July 2027.JulJuly 2027: not checked yet. Checked after 10 August 2027.AugAugust 2027: not checked yet. Checked after 10 September 2027.SepSeptember 2027: not checked yet. Checked after 10 October 2027.Scoring month: the case is scored on this month's average.

Green: the month's average was inside the signed range for that month. Red: outside. September 2027 (framed) is the month the case is scored on.

EXHIBIT K.3 · FACTS

Case30 September 2026 · live case
Data up to30 September 2026
Signed8 October 2026, Klaas Kostro, for Reservoir GmbH
Brent, September average114.16
Fair value (diagnostic)93.51, about 20.65 below the market
ScoredOctober 2027, on the September 2027 average
Next signed case31 December 2026, published by mid-January 2027

CHECK IT YOURSELF

The signed case, as a file

Frozen inputs of this case

The method, in full

Scoring rule v2

Reference series: the monthly mean of daily Brent spot settlements as published by FRED (series DCOILBRENTEU).

EXHIBIT K.4 · THIS CASE AS TEXT

For reading or pasting into an assistant.

2026-09-30.md