Short answer

Prosperity Bancshares Inc (PB) filed its fiscal 2013 10-K annual report with the SEC on Feb 28, 2014.

Top risk flagged: Dodd-Frank Act and banking-agency enforcement: regulatory changes, sanctions or civil penalties could constrain operations

Prosperity Bancshares Inc FY2013 10-K analysis

AI summary of each section, grounded in the filing text

Community bank model serving consumers and small to medium-sized businesses through localized decision-making and traditional banking services
2013 expansion into Oklahoma through Coppermark acquisition, adding 9 banking offices
Three 2013 acquisitions expanded East Texas, Oklahoma, Central Texas and South Texas markets
238 full-service banking locations and 2,995 full-time equivalent associates at year-end
Bank surpassed $10 billion in assets, triggering CFPB supervision and annual Dodd-Frank stress testing requirements

Net income $221.4M vs $167.9M, up 31.9%; net interest income $498.8M, up 31.0% YoY
Tax-equivalent net interest margin 3.58% vs 3.53%; efficiency ratio 41.60% vs 43.48%
Best growth: loans $7.78B, up $2.60B or 50.1%; commercial real estate $2.75B, up $763.2M
Cash and equivalents $381.4M; acquisitions included $151.3M cash consideration, dividends paid $54.0M
Outlook: planned F&M acquisition with $47.0M cash consideration; risks include rates, credit quality, liquidity and integration execution

Dodd-Frank Act and banking-agency enforcement: regulatory changes, sanctions or civil penalties could constrain operations
Texas and Oklahoma concentration: 78.1% of loans tied to real estate, exposing earnings to regional property declines
Information-system breaches: disruptions could trigger customer losses, regulatory scrutiny and civil litigation
Technology competition: better-funded financial institutions may outpace Prosperity in technology-driven products and services
Junior subordinated debentures $124.2 million: payment deferrals could prohibit common-stock dividends for up to five years

Generated from the filing text; verify against the original. How to read a 10-K

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