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BCS

Changes in Beneficial Ownership · 4

5E Advanced Materials, Inc.

FEAMNASDAQEQUITYCurrent

Changes in Beneficial Ownership

Filed Jul 2, 2026Accepted Jul 2, 2026, 8:42 AM EDTFiling CIK 1888654Accession 0001381188-26-000006
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Structured filing — 4

primarydocument.xml

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Filing details

Report period
2026-06-30
Issuer
5E Advanced Materials, Inc.
Issuer CIK
0001888654
Trading symbol
FEAM

Reporting owner 1

Name
Siegler Jonathan A
Reporting owner CIK
0001381188
Relationship
Director
Address
9329 MARIPOSA ROAD, SUITE 210, HESPERIA, CA, 92344

Non-derivative transactions

Non-derivative transactions · 2 reported rows
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Common Stock2026-07-01M · Form 46,516.00A[F1]6,516.00D
Common Stock2026-07-01F · Form 42,411.00D1.444,105.00D
Table key
M · Form 4
Exempt derivative exercise or conversion under Rule 16b-3
A
Acquired
D
Direct
F · Form 4
Securities delivered or withheld for exercise price or tax liability under Rule 16b-3

Derivative transactions

Derivative transactions · 2 reported rows
SecurityConversion / exercise price (USD)Transaction dateCodeAmountA / DPrice (USD)ExercisableExpiresUnderlying securityUnderlying sharesOwned afterOwnership
Restricted Stock Unit[F1]2026-06-30A · Form 46,516.00A0.00[F2][F2]Common Stock6,516.006,516.00D
Restricted Stock Unit[F1]2026-07-01M · Form 46,516.00D0.00[F2][F2]Common Stock6,516.000.00D
Table key
A · Form 4
Acquisition by grant, award or otherwise under Rule 16b-3(d)
A
Acquired
D
Direct
M · Form 4
Exempt derivative exercise or conversion under Rule 16b-3

Footnotes

F1
Each restricted stock unit ("RSU") represents a contingent right to receive one share of 5E Advanced Materials, Inc. common stock.↩ 1↩ 2↩ 3
F2
RSUs granted on June 30, 2026 pursuant to the Issuer's Amended and Restated 2022 Equity Compensation Plan. The RSUs vested on July 1, 2026.↩ 1↩ 2↩ 3↩ 4

Signature 1

Signed
/s / Joshua Malm, Attorney-in-Fact for Jonathan Siegler
Date
2026-07-02

Company context

We are a development stage company focused on becoming a vertically integrated global leader and supplier of specialty boron and advanced boron derivative materials whose mission is to enable decarbonization, increase food security, and ensure domestic supply of critical materials. Our business strategy and objectives are to develop capabilities ranging from upstream extraction and product sales of boric acid, lithium carbonate and potentially other calcium co-products, to downstream boron advanced material processing and development. Our vision is to safely process boric acid and lithium carbonate through sustainable best practices. We hold 100% of the rights through ownership and lode claims filed with the United States Bureau of Land Management in the 5E Boron Americas (Fort Cady) Complex located in southern California (the “Project”), through our wholly owned subsidiary 5E Boron Americas LLC. Our Project is underpinned by a mineral resource that includes boron and lithium, with the boron being contained in a conventional boron mineral known as colemanite. In 2022, our facility was designated as Critical Infrastructure by the U.S. Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency. We believe the Project represents one of the most compelling domestic critical material projects in the United States as a strategically located operation that targets stable long-term demand, with a defined pathway to production and a low-cost, high margin and pr

Current securities

Recent company filings

  1. DEFA14A filingOct 26, 2026
  2. DEF 14A filingOct 26, 2026
  3. 4 filingOct 13, 2026
  4. Entry into a Material Definitive Agreement · Completion of Acquisition or Disposition of Assets · Results of Operations and Financial Condition · Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementOct 1, 2026
  5. 4 filingSep 30, 2026

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