Presentation delivered to the 2012 Annual Meeting of Shareholders at First Financial Bankshares, Inc., April 24, 2012, Abilene, Texas.

2. 2012 Annual Shareholder Meeting

3. Senior Management at First Financial
Years with Company Years in Industry
Scott Dueser
Chairman of the Board, President & 36 41
Chief Executive Officer
J. Bruce Hildebrand, CPA
Executive Vice President 9 33
Chief Financial Officer
Gary L. Webb
Executive Vice President 9 23
Operations
Gary S. Gragg
Executive Vice President 21 33
Credit Administration
Marna Yerigan
Executive Vice President 1 28
Credit Administration
Michele Stevens
Senior Vice President 15 31
Advertising and Marketing
Courtney Jordan
Senior Vice President 3 18
Training & Education
Kirk Thaxton, CTFA
President, First Financial Trust & Asset 25 29
Management

4. Experienced Bank CEOs & Presidents
Years with Company Years in Industry
Ron Butler, FFB Abilene 19 30
Mike Mauldin, FFB Hereford 9 34
Kirby Andrews, FFB Sweetwater 21 24
Trent Swearengin, FFB Eastland 13 13
Mike Boyd, FFB San Angelo 36 40
Tom O’Neil, FFB Cleburne 13 32
Matt Reynolds, FFB Cleburne 7 30
Ron Mullins, FFB Stephenville 6 33
Doyle Lee, FFB Weatherford 16 39
Jay Gibbs, FFB Weatherford 10 37
Mark Jones, FFB Southlake 11 34
Ken Williamson, FFB Mineral Wells 10 40
Robert Pate, FFB Huntsville 14 31
Gary Tucker, First Technology Services 21 37
3

5. Doyle Lee – Retiring CEO of Weatherford

7. Board of Directors
Years as Board Committee
Member Appointment
Steven L. Beal
Director and Former President and COO of 2 Audit / Compensation
Concho Resources Inc.
Lead Director / Executive
Tucker S. Bridwell
President, Mansefeldt Investment Corporation
5 Audit / Nominating/
Corporate Governance
Joseph E. Canon
Executive Director, Dodge Jones Foundation
16 Compensation
Executive
David Copeland
President, SIPCO, Inc. and 14 Audit
Shelton Family Foundation Nominating/Corporate Governance
F. Scott Dueser
Chairman of the Board, President and CEO
21 Executive
Murray Edwards Executive / Audit / Nominating/
Principal, The Edwards Group 6
Corporate Governance

8. Board of Directors
Years as Board Committee
Member Appointment
Ron Giddiens
3 Audit
G&G Investments
Kade L. Matthews
Ranching and Investments
14 Compensation
Executive
Johnny E. Trotter
President and CEO Livestock Investors, Ltd.
9 Compensation
Nominating/Corporate Governance

10. Independent Public Auditors

12. Mrs. Dian Graves Stai – 19 Years of Dedicated Service

14. Forward Looking Statement
The numbers, as of and for the three months ended March 31, 2012, contained within this presentation
are unaudited. Certain statements contained herein may be considered “forward-looking statements”
as defined in the Private Securities Litigation Reform Act of 1995. These statements are based upon
the belief of the Company’s management, as well as assumptions made beyond information currently
available to the Company’s management and, may be, but not necessarily are identified by such words
as “expect”, “plan”, “anticipate”, “target”, “forecast” and “goal”. Because such “forward-looking
statements” are subject to risks and uncertainties, actual results may differ materially from those
expressed or implied by such forward-looking statements. Factors that could cause actual results to
differ materially from the Company’s expectations include competition from other financial institutions
and financial holding companies; the effects of and changes in trade, monetary and fiscal policies and
laws, including interest rate policies of the Federal Reserve Board; changes in the demand for loans;
fluctuations in value of collateral and loan reserves; inflation, interest rate, market and monetary
fluctuations; changes in consumer spending, borrowing and savings habits; and acquisitions and
integration of acquired businesses, and similar variables. Other key risks are described in the
Company’s reports filed with the Securities and Exchange Commission, which may be obtained under
“Investor Relations-Documents/Filings” on the Company’s web site or by writing or calling the Company
at 325.627.7155. The Company does not undertake any obligation to update publicly or revise any
forward-looking statements herein because of new information, future events or otherwise.

15. 2011 Financial Review

16. Earnings

17. 25th Consecutive Year of Increased Earnings
FFIN Earnings (in millions)
$68.4
$59.7
$1.3
$53.1 $53.8
$49.5
$46.0
2006 2007 2008 2009 2010 2011

18. Strong Shareholder Earnings
Basic Earnings Per Share
$2.17
$1.91
$0.04
$1.71 $1.72
$1.59
$1.48
2006 2007 2008 2009 2010 2011

19. Working Harder and Smarter
Efficiency Ratio (FFIN vs. Peers)
2005 2006 2007 2008 2009 2010 2011
First
Financial 52.48% 53.57% 52.83% 50.76% 50.11% 49.49% 48.37%
Peer Group 60.12% 61.29% 63.12% 68.12% 69.53% 67.32% 65.86%

20. Net Interest Margin
Quarterly Interest Margin
5.00%
4.75%
4.50%
4.25%
4.00%
3.75%
3.50%
3.25%
3.00%
3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th
Qtr. '08Qtr. '08Qtr. '09Qtr. '09Qtr. '09Qtr. '09Qtr. '10Qtr. '10Qtr. '10Qtr. '10Qtr. '11Qtr. '11Qtr. '11Qtr. '11
First Financial Peer Group

21. FFIN Outperforms Peers
Percentage Return on Average Assets
1.80% 1.74% 1.78%
1.72% 1.72% 1.75%
1.68%
1.15% 1.10%
0.87% 0.80%
First Financial
Peer Group
0.25%
-0.03% -0.18%
2005 2006 2007 2008 2009 2010 2011

22. Strong Return on Capital
Percentage Return on Average Equity
16.15% 16.20%
15.87%
15.27%
14.44%
13.33% 13.63% 13.74%
12.61%
9.45%
7.26%
First Financial
Peer Group
1.16%
-1.83% -2.57%
2005 2006 2007 2008 2009 2010 2011

23. Capital Ratios
To be considered
12-31-11 03-31-12
well Capitalized
Tier 1
10.33 10.31 > 5.00
Leverage Ratio
Tier 1 Risk
17.49 17.73 > 6.00
Based Capital Ratio
Risk Based
18.74 18.99 > 10.00
Capital Ratio

24. Asset Performance
Growth in Total Assets (in millions)
$4,121
$3,776
$3,212 $3,279
$3,070
$2,850
2006 2007 2008 2009 2010 2011

25. Loan Performance
Growth in FFIN Total Loans (in millions)
$1,787
$1,690
Real Estate
$1,528 $1,566 $1,514
$1,373
Commercial $1,289
$1,076
$990
$836 $855
$860
Student $760
$677
Consumer
$394 $391 $429 $427
$330 $344 $406
Agricultural
$37 $31 $32 $52
$0
$160 $165 $182 $191 $175 $191 $218
$85 $73 $84 $77 $73 $81 $66
2005 2006 2007 2008 2009 2010 2011

26. Sound Lending Practices
Nonperforming assets as a percentage of loans + foreclosed assets (FFIN vs. Peers)
2006 2007 2008 2009 2010 2011
First
Financial 0.30% 0.31% 0.80% 1.46% 1.53% 1.64%
Peer Group 0.60% 0.98% 2.63% 5.41% 5.38% 4.66%

27. Deposit Growth
Growth in FFIN Total Deposits (in millions)
$3,335
$3,113
$2,685
$2,546 $2,583
$2,384
$2,233
$2,154
$1,786 $1,849
$1,807
$1,699
$1,102
$685 $739 $797 $836 $959
2006 2007 2008 2009 2010 2011
Non Interest Bearing Interest Bearing

28. 1st Quarter 2012 Summary

29. 1st Quarter Earnings
FFIN Earnings (in millions)
$17.8
$16.3
$13.7 $13.7
$13.2
$11.5
2007 2008 2009 2010 2011 2012

30. Account Growth
December 31, 2010 December 31, 2011 March 31, 2012
Total Number of Accounts 200,027 204,063 206,546
Net Growth in 2011 – 4,036 Accounts
New Growth in 2012 – 2,483 Accounts

31. Shareholder Earnings – 1st Quarter
Basic Earnings Per Share
$0.56
$0.52
$0.42 $0.44 $0.44
$0.37
2007 2008 2009 2010 2011 2012

33. Growth in Trust Assets
Total Trust Assets – Book Value (in millions)
$1,912
$1,784
$1,631 $1,664
$1,428
$1,300
2006 2007 2008 2009 2010 2011

34. Total Trust Fees
Growth in FFTAM Fees (in thousands)
$12,671
$10,809
$9,441
$9,083
$8,746
$7,665
2006 2007 2008 2009 2010 2011

35. Net Trust Income
Growth in FFTAM Income (in thousands)
$4,176
$3,254
$2,810
$2,549 $2,631
$2,076
2006 2007 2008 2009 2010 2011

36. 35

38. Trust Company Managers
Years with Company Years in Industry
Richard Young, Abilene 15 25
David Byrd, San Angelo 14 35
Konrad Halbert, Fort Worth 7 16
David Castleberry, Stephenville 7 10
Barbara Hill, Odessa 3 33
Wayne Chowning, Sweetwater 1 12

41. Total Return on Investment
Assume you owned 1,000 shares of FFIN stock on January 1, 2011…
Stock cost in January 2011 $34,170
Dividend received ($0.95 x 1,000 shares) $ 950
Decrease in stock price during 2011 ($740)
$2210,720
($34.17 to $33.43 X 1,000 shares)
2011 return on investment 0.61%
2010 return on investment -2.99%
2009 return on investment 0.69%
2008 return on investment 50.20%
2007 return on investment -7.05%
5 year compound average return 6.32%

42. Strong Stock Performance
40.00%
30.00%
20.00%
10.00%
0.00%
-10.00%
-20.00%
-30.00%
-40.00%
-50.00%
-60.00% Jan . ‘07 Dec ‘07 Dec ‘08 Dec . ‘09 Dec. ‘10 Dec. ’11 Mar. ’12
FFIN S&P 500 NASDAQ Dow Jones

44. Recognitions
 KBW Honor Roll – One of Forty banks named – March 2012
 SNL Financial #4 Best Performing Community Bank ($500M -
$5B) – March 2012
 Nifty 50: Bank Director Magazine - #2 – Based on Return on
Equity / Average Tangible Equity
 Ranked #2 in Texas and #7 in the United States by J.D. Power
and Associates 2011 Retail Banking Customer Satisfaction
Study – April 2011
 Bank Intelligence Proven Performers - #4 in the Nation in
$1 - $10 billion category – June 2011

45. Customer Service First
Ritz-Carlton Culture
Everything Speaks
Looking Through The Lens Of The Customer
Star Awards
Shining Stars
WOWs
44

46. WOW!

47. WOW!

48. WOW!

49. WOW!

50. WOW’s
49

51. WOW’s
50

52. Recent De Novo Growth
 San Angelo: HEB Branch – Expected to Open 4th Qtr. 2012
 Abilene: Southside Branch – Expected to Open 4th Qtr. 2012
 Grapevine: Branch of Southlake – March 2012
 Cisco: Branch of Eastland – September 2011
 Lamesa: Office of Trust Company – April 2011
 Crowley: Branch of Cleburne – October 2010
 Odessa: Branch of Abilene – February 2010
 Fort Worth: Branch of Weatherford – February 2010
 Odessa: Office of Trust Company – April 2009
 Merkel: Branch of Sweetwater – July 2008
 Brock: Branch of Weatherford – March 2008
 Acton: Branch of Stephenville – March 2008
 Albany: Branch of Abilene – May 2007
 Fort Worth: Office of Trust Company – April 2007

53. Picture of Cisco – Trent is send Pic
52

54. New Location - Grapevine
53

55. 54

56. Cleburne Main
55

57. Cleburne Ridgeway
56

58. Trophy Club
57

59. Sweetwater
58

60. 59

61. Sweetwater
60

62. Core Markets: West Central Texas
 Markets served benefiting from well-established,
long- time customers
ASSET DEPOSIT MARKET
BANK LOCATIONS
SIZE* MARKET SHARE** SHARE RANK**
First Financial Bank $1,443 M 14 41% 1
(Abilene, Clyde, Moran, Albany, Odessa)
First Financial Bank $166 M 1 42% 1
(Hereford)
First Financial Bank $206M 4 55% 1
(Eastland, Ranger, Rising Star, Cisco)
First Financial Bank $184 M 4 37% 1
(Sweetwater, Roby, Trent, Merkel)
First Financial Bank $431M 2 20% 2
(San Angelo)
TOTALS $2,430M 25 * Data as of 03-31-12
** Data as of 06-30-11
61

63. Expansion Markets
DEPOSIT MARKET MARKET SHARE
BANK ASSET SIZE* LOCATIONS
SHARE** RANK**
First Financial Bank $315 M 6 21% 1
(Cleburne, Burleson, Alvarado, Midlothian, Crowley)
First Financial Bank $325 M 4 8% 5
(Southlake, Trophy Club, Keller, Grapevine
3 16% 3
Bridgeport, Decatur, Boyd)
First Financial Bank $378 M 6 21% 2
(Stephenville, Granbury, Glen Rose, Acton)
First Financial Bank $396 M 7 24% 1
(Weatherford, Aledo, Willow Park, Brock, Ft. Worth)
First Financial Bank $217 M 1 35% 1
(Mineral Wells)
First Financial Bank $179 M 1 21% 2
(Huntsville)
* Data as of 03-31-12
TOTALS $1,810M 28 ** Data as of 06-30-11
62

64. 63

65. Challenges
 Regulatory reform from Washington
 Keep nonperforming assets to a minimum
 Maintain net interest margin
 Lower efficiency ratio

66. Net Interest Margin
Quarterly Interest Margin
5.00%
4.75%
4.50%
4.25%
4.00%
3.75%
3.50%
3.25%
3.00%
3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th 1st 2nd 3rd 4th
Qtr. '08Qtr. '08Qtr. '09Qtr. '09Qtr. '09Qtr. '09Qtr. '10Qtr. '10Qtr. '10Qtr. '10Qtr. '11Qtr. '11Qtr. '11Qtr. '11
First Financial Peer Group

67. Working Harder and Smarter
Efficiency Ratio (FFIN vs. Peers)
2005 2006 2007 2008 2009 2010 2011
First
Financial 52.48% 53.57% 52.83% 50.76% 50.11% 49.49% 48.37%
Peer Group 60.12% 61.29% 63.12% 68.12% 69.53% 67.32% 65.86%

68. 67

69. Opportunities
 Loan Growth
 Mortgage Lending
 Trust Services
 Treasury Management
 Potential Acquisitions

71. Dividends Per Share
Annual Dividends Per Share
$0.95
$0.89 $0.91 $0.91
$0.84
$0.79
$0.73
2005 2006 2007 2008 2009 2010 2011

72. Increase Cash Dividend
 Today $0.24 per share quarterly
 Increase cash divided to $0.25 per quarter – 4.2% increase
 Shareholders of record as of June 15, 2012
 Dividend payable July 2, 2012

74. www.ffin.com