Mountaineer Partners Management, LLC
Position in AMBP — Ardagh Metal Packaging S.A.
CIK 1730532
New York, NY
Position in AMBP
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$7,606,231
+$1,581,363 QoQ
Shares Held
1,878,082
+27.8% QoQ
Ownership
0.314%
of shares outstanding
% of Portfolio
3.78%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2021
8 quarters on record
Voting authority
Sole 80.46890391367363.ToString("F0")%
Shared 0.ToString("F0")%
None 19.531096086326368.ToString("F0")%
Common Shares in AMBP Over Time
Shares Held
Position Value (USD)
Position in Packaging & Containers
Consumer Cyclical · as of Mar 31, 2026Mountaineer Partners Management, LLC holds $7,606,231 across 1 Packaging & Containers name. AMBP ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | AMBP |
Ardagh Metal Packaging S.A.
This page
|
1,878,082 | $7,606,231 |
All Filings in AMBP
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8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $7,606,231 | 1,878,082 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $6,024,868 | 1,469,480 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $6,138,550 | 1,538,484 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $6,584,710 | 1,538,484 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $3,194,314 | 1,057,720 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $3,183,737 | 1,057,720 | Shares | Sole | 2025-02-14 | |
| 2021-12-31 | $9,873,247 | 1,093,383 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $10,492,749 | 1,053,489 | Shares | Sole | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||