FinObservatory

SEC filings / CIK 73124

NORTHERN TRUST CORP

State commercial banks, IL. 17 10-K filer-years in this dataset, the most recent for FY2025, filed Feb 24, 2026. Every figure below is as filed by the company and untouched: FinObservatory has not restated, rescaled or corrected anything, and a blank is a fact the filing does not tag, not a zero.

This is the SEC holding company, identified by its Central Index Key. It is not the insured bank subsidiary that appears in /banks and /deposits, which are FDIC call-report entities on a different consolidation. Nothing here should be compared line for line with those.

Held-to-maturity gap against reported equity

The fair value of the held-to-maturity book minus its carrying amount, divided by the stockholders’ equity the same filing reports. Years marked n/a are years in which the filing does not tag one of the three.

-20-15-10-505FY2009: HTM fair value less carrying amount, +0.4% of reported stockholders’ equityFY2010: HTM fair value less carrying amount, +0.3% of reported stockholders’ equityFY2011: HTM fair value less carrying amount, +0.3% of reported stockholders’ equityFY2012: HTM fair value less carrying amount, +0.2% of reported stockholders’ equityFY2013: HTM fair value less carrying amount, -0.1% of reported stockholders’ equityFY2014: HTM fair value less carrying amount, +0.1% of reported stockholders’ equityFY2015: HTM fair value less carrying amount, -0.2% of reported stockholders’ equityFY2016: HTM fair value less carrying amount, -0.2% of reported stockholders’ equityFY2017: HTM fair value less carrying amount, -0.4% of reported stockholders’ equityFY2018: HTM fair value less carrying amount, -0.8% of reported stockholders’ equityFY2019: HTM fair value less carrying amount, -0.3% of reported stockholders’ equityFY2020: HTM fair value less carrying amount, +0.1% of reported stockholders’ equityFY2021: HTM fair value less carrying amount, -2.1% of reported stockholders’ equityFY2022: HTM fair value less carrying amount, -19.2% of reported stockholders’ equityFY2023: HTM fair value less carrying amount, -14.7% of reported stockholders’ equityFY2024: HTM fair value less carrying amount, -12.8% of reported stockholders’ equityFY2025 (partial): HTM fair value less carrying amount, -8.1% of reported stockholders’ equity0910111213141516171819202122232425Fiscal year of the 10-K% of reported stockholders’ equity

The gap is computable for 17 of this company’s 17 filings.

Source: SEC Financial Statement Data Sets, US Securities and Exchange Commission, Division of Economic and Risk Analysis. Facts as filed: uncleaned, unrestated, not audited by FinObservatory. Selection: consolidated USD balance-sheet instants at each filing's own period end, from this company's 10-K submissions with prevrpt = 0. Methodology

Filing history, as filed

FYFiledAssetsDepositsEquityAOCIHTM carryingHTM fair valueGap, % of equityCustom facts
2025pFeb 24, 2026$177.13bn$142.80bn$12.96bn-$590.5m$23.43bn$22.38bn-8.1%9.7%
2024Feb 24, 2025$155.51bn$122.48bn$12.79bn-$814.0m$22.30bn$20.65bn-12.8%11.5%
2023Feb 27, 2024$150.78bn$116.16bn$11.90bn-$1.14bn$26.22bn$24.47bn-14.7%11.0%
2022Feb 28, 2023$155.04bn$123.93bn$11.26bn-$1.57bn$25.04bn$22.88bn-19.2%10.0%
2021Feb 28, 2022$183.89bn$159.93bn$12.02bn-$35.6m$23.56bn$23.32bn-2.1%10.4%
2020Feb 23, 2021$170.00bn$143.88bn$11.69bn$428.0m$17.79bn$17.80bn+0.1%11.9%
2019Feb 25, 2020$136.83bn$109.12bn$11.09bn-$194.7m$12.28bn$12.25bn-0.3%9.8%
2018Feb 26, 2019$132.21bn$104.50bn$10.51bn-$453.7m$14.35bn$14.27bn-0.8%10.7%
2017Feb 27, 2018$138.59bn$112.39bn$10.22bn-$414.3m$13.05bn$13.01bn-0.4%11.6%
2016Feb 28, 2017$123.93bn$101.65bn$9.77bn-$370.0m$8.92bn$8.91bn-0.2%11.5%
2015Feb 29, 2016$116.75bn$96.87bn$8.71bn-$372.7m$5.25bn$5.23bn-0.2%8.9%
2014Feb 26, 2015$109.95bn$90.76bn$8.45bn-$319.7m$4.17bn$4.18bn+0.1%9.1%
2013Feb 26, 2014$102.95bn$84.10bn$7.91bn-$244.3m$2.33bn$2.32bn-0.1%12.6%
2012Feb 26, 2013$97.46bn$81.41bn$7.53bn-$283.0m$2.38bn$2.39bn+0.2%12.6%
2011Feb 24, 2012$100.22bn$82.68bn$7.12bn-$345.6m$799.2m$817.1m+0.3%13.9%
2010Feb 25, 2011$83.84bn$64.20bn$6.83bn-$305.3m$1.19bn$1.21bn+0.3%17.8%
2009Feb 26, 2010$82.14bn$58.28bn$6.31bn-$361.6m$1.16bn$1.19bn+0.4%17.0%

ext marks a carrying amount tagged with a company-invented element. p marks FY2025, which the dataset’s filing window (closing Mar 31, 2026) leaves incomplete across filers. “Custom facts” is the share of that filing’s consolidated facts carrying a company-invented tag, in any unit.

Source: SEC Financial Statement Data Sets, US Securities and Exchange Commission, Division of Economic and Risk Analysis. Facts as filed: uncleaned, unrestated, not audited by FinObservatory. Selection: this company's 10-K submissions with prevrpt = 0, one per fiscal year by latest filed date; consolidated USD instants at each filing's period end. Dollar columns are raw US dollars. Methodology

What this page cannot tell you

  • A blank in the held-to-maturity columns means the filing does not tag that fact on the consolidated face. It does not mean the company holds no held-to-maturity securities, and this dataset cannot distinguish the two.
  • A held-to-maturity gap is not a realised loss. Held to maturity, the securities pay par. The gap measures how far the reported equity sits from a mark-to-market equity, which becomes a solvency question only if the book must be sold.
  • AOCI is not the held-to-maturity mark. It bundles available-for-sale marks, hedge marks, pension and translation, net of tax. Do not add the two columns.
  • Every value is as filed. A scale error, sign error or mis-tag by the company is reproduced here exactly as the company made it.

Pages exist for the 650 bank and thrift holding companies with at least one 10-K from FY2015 onward, out of 900 with a 10-K anywhere in the dataset.