diff --git a/source/backend/api/Areas/Reports/Controllers/ManagementActivityController.cs b/source/backend/api/Areas/Reports/Controllers/ManagementActivityController.cs
index c1abc8b3f1..5bc159ffdf 100644
--- a/source/backend/api/Areas/Reports/Controllers/ManagementActivityController.cs
+++ b/source/backend/api/Areas/Reports/Controllers/ManagementActivityController.cs
@@ -166,6 +166,5 @@ private ICollection<PimsManagementActivityProperty> TransformAllPropertiesToLatL
 
             return activityProperties;
         }
-
     }
 }
diff --git a/source/backend/api/Areas/Reports/Models/Management/ManagementActivityInvoicesReportModel.cs b/source/backend/api/Areas/Reports/Models/Management/ManagementActivityInvoicesReportModel.cs
index 9f5b873fe9..77075bfb3e 100644
--- a/source/backend/api/Areas/Reports/Models/Management/ManagementActivityInvoicesReportModel.cs
+++ b/source/backend/api/Areas/Reports/Models/Management/ManagementActivityInvoicesReportModel.cs
@@ -16,6 +16,10 @@ public class ManagementActivityInvoicesReportModel
         [CsvHelper.Configuration.Attributes.Name("Invoice Number")]
         public string InvoiceNumber { get; set; }
 
+        [DisplayName("Management File Number")]
+        [CsvHelper.Configuration.Attributes.Name("Management File Number")]
+        public string ManagementFileNumber { get; set; }
+
         [DisplayName("Management File Name")]
         [CsvHelper.Configuration.Attributes.Name("Management File Name")]
         public string ManagementFileName { get; set; }
@@ -129,6 +133,7 @@ public ManagementActivityInvoicesReportModel(PimsManagementActivityInvoice invoi
             ArgumentNullException.ThrowIfNull(invoice, nameof(invoice));
 
             InvoiceNumber = GetNullableString(invoice.InvoiceNum);
+            ManagementFileNumber = invoice.ManagementActivity?.ManagementFile?.ManagementFileId != null ? $"M-{invoice.ManagementActivity.ManagementFile?.ManagementFileId}" : string.Empty;
             ManagementFileName = GetNullableString(invoice.ManagementActivity?.ManagementFile?.FileName);
             LegacyFileNum = GetNullableString(invoice.ManagementActivity?.ManagementFile?.LegacyFileNum);
             Funding = GetNullableString(invoice.ManagementActivity?.ManagementFile?.AcquisitionFundingTypeCodeNavigation?.Description);
diff --git a/source/backend/api/Areas/Reports/Models/Management/ManagementActivityOverviewReportModel.cs b/source/backend/api/Areas/Reports/Models/Management/ManagementActivityOverviewReportModel.cs
index 0f3a62e3f8..3da03c8a4d 100644
--- a/source/backend/api/Areas/Reports/Models/Management/ManagementActivityOverviewReportModel.cs
+++ b/source/backend/api/Areas/Reports/Models/Management/ManagementActivityOverviewReportModel.cs
@@ -15,6 +15,10 @@ public class ManagementActivityOverviewReportModel
         [CsvHelper.Configuration.Attributes.Name("Management File Name")]
         public string ManagementFileName { get; set; }
 
+        [DisplayName("Management File Number")]
+        [CsvHelper.Configuration.Attributes.Name("Management File Number")]
+        public string ManagementFileNumber { get; set; }
+
         [DisplayName("Historical File Number")]
         [CsvHelper.Configuration.Attributes.Name("Historical File Number")]
         public string LegacyFileNum { get; set; }
@@ -103,6 +107,7 @@ public ManagementActivityOverviewReportModel(PimsManagementActivity activity)
         {
             ArgumentNullException.ThrowIfNull(activity, nameof(activity));
 
+            ManagementFileNumber = activity.ManagementFile?.ManagementFileId != null ? $"M-{activity.ManagementFile?.ManagementFileId}" : string.Empty;
             ManagementFileName = GetNullableString(activity.ManagementFile?.FileName);
             LegacyFileNum = GetNullableString(activity.ManagementFile?.LegacyFileNum);
             Properties = GetPropertiesAsString(activity);