---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-301256"
form_type: "8-K"
ticker: "AUBN"
cik: "0000750574"
company_name: "AUBURN NATIONAL BANCORPORATION, INC"
filed_at: "2023-12-21T23:59:59+00:00"
generated_at: "2026-06-07T09:35:59.470594+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Auburn National sells $117.6M in securities, records $4.7M after-tax loss to reposition balance sheet

## Summary
- Sold ~$117.6M (27% of AFS) with weighted avg book yield 2.11% and duration 4.0 years; after-tax loss of $4.7M ($1.36/share).
- Proceeds $111.3M used to repay $48M wholesale funding at 5.38% cost; remainder held for loans and higher-yielding securities.
- Expects net loss in Q4 2023 but improved net interest income by $2.8M pre-tax and EPS by ~$0.60 (after-tax) in 2024.
- Balance sheet expected below $1B total assets by Dec 31, 2023, improving TCE ratio and providing cost savings.
- Earn-back period ~2.3 years; capital ratios remain well above well-capitalized levels.

## SEC filing metadata
- accession: 0001193125-23-301256
- form_type: 8-K
- ticker: AUBN
- cik: 0000750574
- company_name: AUBURN NATIONAL BANCORPORATION, INC
- filed_at: 2023-12-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/750574/000119312523301256/0001193125-23-301256-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/750574/000119312523301256/d607652d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-301256
- JSON: https://secwatch.observer/filing/0001193125-23-301256.json
- Plain text: https://secwatch.observer/filing/0001193125-23-301256.txt

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