Insider Trading activities of Southwest Royalties Institutional Income Fund X-b insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Southwest Royalties Institutional Income Fund X-b since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Southwest Royalties Institutional Income Fund X-b since year 2005. Table 2 shows the detailed insider transactions of Southwest Royalties Institutional Income Fund X-b since 2005. The reporting company's ticker symbol is N/A. The reporting company's CIK number is 859911.
The total value of stock buying since 2005 is $6,002,018.
The total value of stock sales since 2005 is $0.
The total value of stock option exercises since 2005 is $0.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Southwest Royalties Institutional Income Fund X-b (N/A).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2012-03 18,298 $5,756,916 0 $0 0 $0
2010-06 54 $1,666 0 $0 0 $0
2009-12 92 $7,314 0 $0 0 $0
2009-09 68 $5,406 0 $0 0 $0
2009-06 70 $5,564 0 $0 0 $0
2009-03 8 $636 0 $0 0 $0
2008-12 52 $14,878 0 $0 0 $0
2008-09 168 $41,324 0 $0 0 $0
2008-06 126 $25,298 0 $0 0 $0
2007-12 96 $15,322 0 $0 0 $0
2007-09 46 $7,110 0 $0 0 $0
2007-06 30 $5,088 0 $0 0 $0
2007-03 58 $10,188 0 $0 0 $0
2006-12 100 $17,568 0 $0 0 $0
2006-09 178 $29,484 0 $0 0 $0
2006-06 24 $3,492 0 $0 0 $0
2006-03 158 $23,000 0 $0 0 $0
2005-12 12 $1,806 0 $0 0 $0
2005-09 94 $10,342 0 $0 0 $0
2005-03 264 $19,616 0 $0 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Southwest Royalties Institutional Income Fund X-b insiders (N/A)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2012-03-14 Clayton Williams Energy Inc /de (10% Owner) Buy 9,149 314.62 2,878,458
2012-03-14 Southwest Royalties Inc (10% Owner) Buy 9,149 314.62 2,878,458
2010-06-18 Clayton Williams Energy Inc /de (10% Owner) Buy 27 30.87 833
2010-06-18 Southwest Royalties Inc (10% Owner) Buy 27 30.87 833
2009-12-18 Clayton Williams Energy Inc /de (10% Owner) Buy 46 79.50 3,657
2009-12-18 Southwest Royalties Inc (10% Owner) Buy 46 79.50 3,657
2009-09-16 Clayton Williams Energy Inc /de (10% Owner) Buy 34 79.50 2,703
2009-09-16 Southwest Royalties Inc (10% Owner) Buy 34 79.50 2,703
2009-06-16 Clayton Williams Energy Inc /de (10% Owner) Buy 35 79.50 2,782
2009-06-16 Southwest Royalties Inc (10% Owner) Buy 35 79.50 2,782
2009-03-03 Clayton Williams Energy Inc /de (10% Owner) Buy 4 79.50 318
2009-03-03 Southwest Royalties Inc (10% Owner) Buy 4 79.50 318
2008-12-18 Clayton Williams Energy Inc /de (10% Owner) Buy 26 286.14 7,439
2008-12-18 Southwest Royalties Inc (10% Owner) Buy 26 286.14 7,439
2008-09-19 Clayton Williams Energy Inc /de (10% Owner) Buy 84 245.98 20,662
2008-09-19 Southwest Royalties Inc (10% Owner) Buy 84 245.98 20,662
2008-06-19 Clayton Williams Energy Inc /de (10% Owner) Buy 63 200.78 12,649
2008-06-19 Southwest Royalties Inc (10% Owner) Buy 63 200.78 12,649
2007-12-19 Clayton Williams Energy Inc /de (10% Owner) Buy 48 159.62 7,661
2007-12-19 Southwest Royalties Inc (10% Owner) Buy 48 159.62 7,661
2007-09-27 Clayton Williams Energy Inc /de (10% Owner) Buy 23 154.60 3,555
2007-09-27 Southwest Royalties Inc (10% Owner) Buy 23 154.60 3,555
2007-06-29 Clayton Williams Energy Inc /de (10% Owner) Buy 15 169.66 2,544
2007-06-29 Southwest Royalties Inc (10% Owner) Buy 15 169.66 2,544
2007-03-19 Clayton Williams Energy Inc /de (10% Owner) Buy 29 175.68 5,094
2007-03-19 Southwest Royalties Inc (10% Owner) Buy 29 175.68 5,094
2006-12-15 Clayton Williams Energy Inc /de (10% Owner) Buy 50 175.68 8,784
2006-12-15 Southwest Royalties Inc (10% Owner) Buy 50 175.68 8,784
2006-09-22 Clayton Williams Energy Inc /de (10% Owner) Buy 89 165.65 14,742
2006-09-22 Southwest Royalties Inc (10% Owner) Buy 89 165.65 14,742
2006-06-30 Clayton Williams Energy Inc /de (10% Owner) Buy 12 145.56 1,746
2006-06-30 Southwest Royalties Inc (10% Owner) Buy 12 145.56 1,746
2006-03-31 Clayton Williams Energy Inc /de (10% Owner) Buy 79 145.57 11,500
2006-03-31 Southwest Royalties Inc (10% Owner) Buy 79 145.57 11,500
2005-12-21 Clayton Williams Energy Inc /de (10% Owner) Buy 6 150.59 903
2005-12-21 Southwest Royalties Inc (10% Owner) Buy 6 150.59 903
2005-09-30 Clayton Williams Energy Inc /de (10% Owner) Buy 47 110.04 5,171
2005-09-30 Southwest Royalties Inc (10% Owner) Buy 47 110.04 5,171
2005-03-30 Clayton Williams Energy Inc /de (10% Owner) Buy 70 74.31 5,201
2005-03-30 Southwest Royalties Inc (10% Owner) Buy 70 74.31 5,201
2005-03-15 Clayton Williams Energy Inc /de (10% Owner) Buy 62 74.31 4,607
2005-03-15 Southwest Royalties Inc (10% Owner) Buy 62 74.31 4,607

Insider trading activities including stock purchases, stock sales, and option exercises of N/A listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Southwest Royalties Institutional Income Fund X-b (symbol N/A, CIK number 859911) see the Securities and Exchange Commission (SEC) website.