FinObservatory

SEC filings / CIK 1068851

PROSPERITY BANCSHARES INC

State commercial banks, TX. 16 10-K filer-years in this dataset, the most recent for FY2025, filed Feb 26, 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.

-30-20-10010FY2010: HTM fair value less carrying amount, +8.4% of reported stockholders’ equityFY2011: HTM fair value less carrying amount, +10.0% of reported stockholders’ equityFY2012: HTM fair value less carrying amount, +9.7% of reported stockholders’ equityFY2013: HTM fair value less carrying amount, -2.9% of reported stockholders’ equityFY2014: HTM fair value less carrying amount, +1.5% of reported stockholders’ equityFY2015: HTM fair value less carrying amount, -0.2% of reported stockholders’ equityFY2016: HTM fair value less carrying amount, -4.5% of reported stockholders’ equityFY2017: HTM fair value less carrying amount, -3.4% of reported stockholders’ equityFY2018: HTM fair value less carrying amount, -6.0% of reported stockholders’ equityFY2019: HTM fair value less carrying amount, +0.4% of reported stockholders’ equityFY2020: HTM fair value less carrying amount, +2.4% of reported stockholders’ equityFY2021: HTM fair value less carrying amount, -0.8% of reported stockholders’ equityFY2022: HTM fair value less carrying amount, -24.4% of reported stockholders’ equityFY2023: HTM fair value less carrying amount, -19.5% of reported stockholders’ equityFY2024: HTM fair value less carrying amount, -18.5% of reported stockholders’ equityFY2025 (partial): HTM fair value less carrying amount, -11.1% of reported stockholders’ equity10111213141516171819202122232425Fiscal year of the 10-K% of reported stockholders’ equity

The gap is computable for 16 of this company’s 16 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 26, 2026$38.46bn$28.48bn$7.62bnn/a$10.28bn$9.43bn-11.1%15.8%
2024Feb 27, 2025$39.57bn$28.38bn$7.44bnn/a$10.76bn$9.38bn-18.5%15.9%
2023Feb 28, 2024$38.55bn$27.18bn$7.08bnn/a$12.37bn$10.98bn-19.5%13.3%
2022Feb 27, 2023$37.69bn$28.53bn$6.70bnn/a$14.02bn$12.39bn-24.4%12.0%
2021Feb 28, 2022$37.83bn$30.77bn$6.43bnn/a$12.30bn$12.25bn-0.8%11.0%
2020Feb 26, 2021$34.06bn$27.36bn$6.13bnn/a$7.89bn$8.04bn+2.4%11.3%
2019Feb 28, 2020$32.19bn$24.20bn$5.97bnn/a$8.28bn$8.30bn+0.4%11.4%
2018Feb 27, 2019$22.69bn$17.26bn$4.05bnn/a$9.32bn$9.08bn-6.0%10.8%
2017Feb 28, 2018$22.59bn$17.82bn$3.82bnn/a$9.45bn$9.32bn-3.4%5.6%
2016Feb 28, 2017$22.33bn$17.31bn$3.64bnn/a$9.50bn$9.34bn-4.5%5.6%
2015Feb 29, 2016$22.04bn$17.68bn$3.46bnn/a$9.40bn$9.39bn-0.2%5.0%
2014Mar 2, 2015$21.51bn$17.69bn$3.24bnn/a$8.90bn$8.95bn+1.5%3.8%
2013Feb 28, 2014$18.64bn$15.29bn$2.79bnn/a$8.07bn$7.99bn-2.9%9.2%
2012Feb 28, 2013$14.58bn$11.64bn$2.09bnn/a$7.22bn$7.42bn+9.7%8.6%
2011Feb 29, 2012$9.82bn$8.06bn$1.57bnn/a$4.34bn$4.49bn+10.0%6.5%
2010Mar 1, 2011$9.48bn$7.45bn$1.45bnn/a$4.19bn$4.31bn+8.4%3.1%

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.