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tsr:bench202407222637_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407192617_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407192623_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407192615_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407192626_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407192620_8457Member 2026-08-31 0000764624 tsr:C000183975Member tsr:bench202407222646_8457Member 2026-08-31 iso4217:USD pure iso4217:USD shares false 0000764624 N-1A N-CSRS Legg Mason Partners Income Trust 2026-08-31 Western Asset Short Duration Municipal Income Fund Class A SHDAX 2026-08-31 <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">This </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">semi-annual shareholder report</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"> contains important information about </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">Western Asset Short Duration Municipal Income Fund for the </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">period  </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">March 1, 2026, to </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">August 31, 2026.</span> semi-annual shareholder report <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">You can find additional information about the Fund at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">https://www.franklintempleton.com/regulatory-fund-documents</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">. You can also </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">request this information by contacting us at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">877-6LM-FUND/656-3863</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">.</span> https://www.franklintempleton.com/regulatory-fund-documents 877-6LM-FUND/656-3863 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(based on a hypothetical $10,000 investment)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF; border-right:1.5pt solid #E6FAFF; border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"> <tr style="height:1px;"> <td style="height:1px;width:50%;background-color:#E6FAFF;"></td> <td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"></td> <td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"></td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Class Name</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs of a $10,000 </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>investment</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs paid as a percentage of a </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>$10,000 investment</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:7.5pt;;">^,</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^†</span> </div> </td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">Class A</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$28</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">0.55%</span></div> </td> </tr> </table></div> 28 0.0055 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>KEY FUND STATISTICS </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"> <tr style="height:1px;"> <td style="height:1px;width:74.41007194244604%;"></td> <td style="height:1px;width:25.58992805755396%;"></td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Net Assets</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$266,921,950</span></div> </td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Number of Portfolio Holdings</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">144</span></div> </td> </tr> <tr> <td colspan="1" style="vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Portfolio Turnover Rate</b></span></div> </td> <td colspan="1" style="white-space:nowrap;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">10%</span></div> </td> </tr> </table></div> 266921950 144 0.10 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT DID THE FUND INVEST IN? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>Portfolio Composition</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b> </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>(% of Total Investments)</b></span></div><div><img alt="image" src="ts8454img004.jpg" style="width:96.41294838145232%"/></div> https://www.franklintempleton.com/regulatory-fund-documents 0.286 0.248 0.087 0.077 0.074 0.060 0.050 0.039 0.025 0.018 0.017 0.011 0.008 Western Asset Short Duration Municipal Income Fund Class C SHDLX 2026-08-31 <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">This </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">semi-annual shareholder report</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"> contains important information about </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">Western Asset Short Duration Municipal Income Fund for the </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">period  </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">March 1, 2026, to </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">August 31, 2026.</span> semi-annual shareholder report <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">You can find additional information about the Fund at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">https://www.franklintempleton.com/regulatory-fund-documents</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">. You can also </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">request this information by contacting us at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">877-6LM-FUND/656-3863</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">.</span> https://www.franklintempleton.com/regulatory-fund-documents 877-6LM-FUND/656-3863 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(based on a hypothetical $10,000 investment)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF; border-right:1.5pt solid #E6FAFF; border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"> <tr style="height:1px;"> <td style="height:1px;width:50%;background-color:#E6FAFF;"></td> <td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"></td> <td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"></td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Class Name</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs of a $10,000 </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>investment</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs paid as a percentage of a </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>$10,000 investment</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:7.5pt;;">^,</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^†</span> </div> </td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">Class C</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$46</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">0.92%</span></div> </td> </tr> </table></div> 46 0.0092 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>KEY FUND STATISTICS </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"> <tr style="height:1px;"> <td style="height:1px;width:74.41007194244604%;"></td> <td style="height:1px;width:25.58992805755396%;"></td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Net Assets</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$266,921,950</span></div> </td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Number of Portfolio Holdings</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">144</span></div> </td> </tr> <tr> <td colspan="1" style="vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Portfolio Turnover Rate</b></span></div> </td> <td colspan="1" style="white-space:nowrap;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">10%</span></div> </td> </tr> </table></div> 266921950 144 0.10 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT DID THE FUND INVEST IN? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>Portfolio Composition</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b> </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>(% of Total Investments)</b></span></div><div><img alt="image" src="ts8456img004.jpg" style="width:96.41294838145232%"/></div> https://www.franklintempleton.com/regulatory-fund-documents 0.286 0.248 0.087 0.077 0.074 0.060 0.050 0.039 0.025 0.018 0.017 0.011 0.008 Western Asset Short Duration Municipal Income Fund Class C2 CIABX 2026-08-31 <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">This </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">semi-annual shareholder report</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"> contains important information about </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">Western Asset Short Duration Municipal Income Fund for the </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">period  </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">March 1, 2026, to </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">August 31, 2026.</span> semi-annual shareholder report <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">You can find additional information about the Fund at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">https://www.franklintempleton.com/regulatory-fund-documents</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">. You can also </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">request this information by contacting us at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">877-6LM-FUND/656-3863</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">.</span> https://www.franklintempleton.com/regulatory-fund-documents 877-6LM-FUND/656-3863 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(based on a hypothetical $10,000 investment)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF; border-right:1.5pt solid #E6FAFF; border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"> <tr style="height:1px;"> <td style="height:1px;width:50%;background-color:#E6FAFF;"></td> <td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"></td> <td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"></td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Class Name</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs of a $10,000 </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>investment</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs paid as a percentage of a </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>$10,000 investment</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:7.5pt;;">^,</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^†</span> </div> </td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">Class C2</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$55</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">1.10%</span></div> </td> </tr> </table></div> 55 0.0110 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>KEY FUND STATISTICS </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"> <tr style="height:1px;"> <td style="height:1px;width:74.41007194244604%;"></td> <td style="height:1px;width:25.58992805755396%;"></td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Net Assets</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$266,921,950</span></div> </td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Number of Portfolio Holdings</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">144</span></div> </td> </tr> <tr> <td colspan="1" style="vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Portfolio Turnover Rate</b></span></div> </td> <td colspan="1" style="white-space:nowrap;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">10%</span></div> </td> </tr> </table></div> 266921950 144 0.10 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT DID THE FUND INVEST IN? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>Portfolio Composition</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b> </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>(% of Total Investments)</b></span></div><div><img alt="image" src="ts8455img004.jpg" style="width:96.41294838145232%"/></div> https://www.franklintempleton.com/regulatory-fund-documents 0.286 0.248 0.087 0.077 0.074 0.060 0.050 0.039 0.025 0.018 0.017 0.011 0.008 Western Asset Short Duration Municipal Income Fund Class I SMDYX 2026-08-31 <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">This </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">semi-annual shareholder report</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"> contains important information about </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">Western Asset Short Duration Municipal Income Fund for the </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">period  </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">March 1, 2026, to </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">August 31, 2026.</span> semi-annual shareholder report <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">You can find additional information about the Fund at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">https://www.franklintempleton.com/regulatory-fund-documents</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">. You can also </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">request this information by contacting us at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">877-6LM-FUND/656-3863</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">.</span> https://www.franklintempleton.com/regulatory-fund-documents 877-6LM-FUND/656-3863 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(based on a hypothetical $10,000 investment)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF; border-right:1.5pt solid #E6FAFF; border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"> <tr style="height:1px;"> <td style="height:1px;width:50%;background-color:#E6FAFF;"></td> <td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"></td> <td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"></td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Class Name</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs of a $10,000 </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>investment</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs paid as a percentage of a </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>$10,000 investment</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:7.5pt;;">^,</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^†</span> </div> </td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">Class I</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$20</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">0.40%</span></div> </td> </tr> </table></div> 20 0.0040 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>KEY FUND STATISTICS </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"> <tr style="height:1px;"> <td style="height:1px;width:74.41007194244604%;"></td> <td style="height:1px;width:25.58992805755396%;"></td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Net Assets</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$266,921,950</span></div> </td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Number of Portfolio Holdings</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">144</span></div> </td> </tr> <tr> <td colspan="1" style="vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Portfolio Turnover Rate</b></span></div> </td> <td colspan="1" style="white-space:nowrap;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">10%</span></div> </td> </tr> </table></div> 266921950 144 0.10 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT DID THE FUND INVEST IN? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>Portfolio Composition</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b> </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>(% of Total Investments)</b></span></div><div><img alt="image" src="ts8458img004.jpg" style="width:96.41294838145232%"/></div> https://www.franklintempleton.com/regulatory-fund-documents 0.286 0.248 0.087 0.077 0.074 0.060 0.050 0.039 0.025 0.018 0.017 0.011 0.008 Western Asset Short Duration Municipal Income Fund Class IS SHDSX 2026-08-31 <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">This </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">semi-annual shareholder report</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"> contains important information about </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">Western Asset Short Duration Municipal Income Fund for the </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">period  </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">March 1, 2026, to </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">August 31, 2026.</span> semi-annual shareholder report <span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">You can find additional information about the Fund at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">https://www.franklintempleton.com/regulatory-fund-documents</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">. You can also </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">request this information by contacting us at </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">877-6LM-FUND/656-3863</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;">.</span> https://www.franklintempleton.com/regulatory-fund-documents 877-6LM-FUND/656-3863 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(based on a hypothetical $10,000 investment)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF; border-right:1.5pt solid #E6FAFF; border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"> <tr style="height:1px;"> <td style="height:1px;width:50%;background-color:#E6FAFF;"></td> <td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"></td> <td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"></td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Class Name</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs of a $10,000 </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>investment</b></span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>Costs paid as a percentage of a </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"><b>$10,000 investment</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:7.5pt;;">^,</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">^†</span> </div> </td> </tr> <tr> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;">Class IS</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$18</span></div> </td> <td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"> <div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">0.35%</span></div> </td> </tr> </table></div> 18 0.0035 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>KEY FUND STATISTICS </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div> <table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"> <tr style="height:1px;"> <td style="height:1px;width:74.41007194244604%;"></td> <td style="height:1px;width:25.58992805755396%;"></td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Net Assets</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">$266,921,950</span></div> </td> </tr> <tr> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Total Number of Portfolio Holdings</b></span></div> </td> <td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">144</span></div> </td> </tr> <tr> <td colspan="1" style="vertical-align:top"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"><b>Portfolio Turnover Rate</b></span></div> </td> <td colspan="1" style="white-space:nowrap;vertical-align:bottom"> <div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"><span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;">10%</span></div> </td> </tr> </table></div> 266921950 144 0.10 <div><span style="text-transform:uppercase;"><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"><b>WHAT DID THE FUND INVEST IN? </b></span></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">(as of </span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;">August 31, 2026)</span></div><div><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>Portfolio Composition</b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;">^*</span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b> </b></span><span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"><b>(% of Total Investments)</b></span></div><div><img alt="image" src="ts8457img004.jpg" style="width:96.41294838145232%"/></div> https://www.franklintempleton.com/regulatory-fund-documents 0.286 0.248 0.087 0.077 0.074 0.060 0.050 0.039 0.025 0.018 0.017 0.011 0.008 *Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. †Annualized. *Does not include derivatives, except purchased options, if any.   *Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. †Annualized. *Does not include derivatives, except purchased options, if any.   *Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. †Annualized. *Does not include derivatives, except purchased options, if any.   *Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. †Annualized. *Does not include derivatives, except purchased options, if any.   *Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. †Annualized. *Does not include derivatives, except purchased options, if any.