WESTERN ASSET MORTGAGE BACKED SECURITIES PORTFOLIO, L.L.C. research brief

CIK 1459359 Copy CIK

Generated Nov. 13, 2026, 5:17 p.m. from up to 100 stored Form D disclosures. A CIK identifies a filer, not a single offering.

Current stored business address: PASADENA California. Reported legal jurisdiction: DELAWARE. These do not establish investor residence or where funds were deployed.

• April 29, 2026 · D/A · 0001459359-26-000001 · Source evidence

  Reported offering amount: Unavailable USD. Reported amount sold: 219777062 USD.

• April 23, 2025 · D/A · 0002064988-25-000010 · Source evidence

  Reported offering amount: Unavailable USD. Reported amount sold: 559269111 USD.

Reviewed offering links

• No independently reviewed offering relationship is recorded. Adjacent filings are not assumed to belong to one offering.

Citation: Form D Explorer, “WESTERN ASSET MORTGAGE BACKED SECURITIES PORTFOLIO, L.L.C. research brief,” CIK 1459359, retrieved Nov. 13, 2026, 5:17 p.m.. Cite the specific accessions used. No amounts have been summed.