---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-184247"
form_type: "8-K"
ticker: "MMD"
cik: "0001518557"
company_name: "NYLI MacKay DefinedTerm Muni Opportunities Fund"
filed_at: "2024-07-25T23:59:59+00:00"
generated_at: "2026-05-31T16:16:19.004332+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# MainStay MacKay Muni Fund to change name, extend termination to 2036 via tender offer

## Summary
- Name changes to NYLI MacKay DefinedTerm Muni Opportunities Fund effective Aug 28, 2024.
- Original Dec 31, 2024 termination date now conditionally extended to Dec 31, 2036.
- Extension requires completion of an Eligible Tender Offer for 100% of shares at NAV before Dec 31, 2024.
- Board approved amendment to Declaration of Trust to implement the new termination date upon tender offer completion.

## SEC filing metadata
- accession: 0001193125-24-184247
- form_type: 8-K
- ticker: MMD
- cik: 0001518557
- company_name: NYLI MacKay DefinedTerm Muni Opportunities Fund
- filed_at: 2024-07-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1518557/000119312524184247/0001193125-24-184247-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1518557/000119312524184247/d868840d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-184247
- JSON: https://secwatch.observer/filing/0001193125-24-184247.json
- Plain text: https://secwatch.observer/filing/0001193125-24-184247.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.