diff --git a/services/api/src/segments/dto/segment.dto.ts b/services/api/src/segments/dto/segment.dto.ts
index 7a5c9a2..dc5cd45 100644
--- a/services/api/src/segments/dto/segment.dto.ts
+++ b/services/api/src/segments/dto/segment.dto.ts
@@ -82,6 +82,10 @@ export class ApplySegmentQueryDto {
   @IsOptional()
   @IsString()
   metric?: string;
+
+  @IsOptional()
+  @IsString()
+  corp?: string;
 }
 
 export class CompareSegmentsQueryDto {
@@ -98,4 +102,8 @@ export class CompareSegmentsQueryDto {
   @IsOptional()
   @IsString()
   metric?: string;
+
+  @IsOptional()
+  @IsString()
+  corp?: string;
 }
diff --git a/services/api/src/segments/segments.service.ts b/services/api/src/segments/segments.service.ts
index 77d48f6..032a6fa 100644
--- a/services/api/src/segments/segments.service.ts
+++ b/services/api/src/segments/segments.service.ts
@@ -11,6 +11,7 @@ import {
   SegmentOperator,
   ConditionOperator,
 } from './dto/segment.dto';
+import { resolveCorpId, corpSessionFilter } from '../common/corp-filter.util';
 
 export interface SegmentMetrics {
   segmentId: string;
@@ -221,6 +222,8 @@ export class SegmentsService {
     const { startDate, endDate } = query;
 
     const whereClause = this.buildWhereClause(segment.conditions, segment.operator);
+    const corpId = await resolveCorpId(this.dataSource, query.corp);
+    const corpClause = corpSessionFilter(3, corpId);
 
     const metricsQuery = `
       WITH session_data AS (
@@ -256,7 +259,7 @@ export class SegmentsService {
         FROM session_fingerprints sf
         WHERE sf."createdAt" BETWEEN $1 AND $2
           AND sf."isBot" = false
-          ${whereClause ? `AND ${whereClause}` : ''}
+          ${whereClause ? `AND ${whereClause}` : ''}${corpClause}
       )
       SELECT
         COUNT(DISTINCT "sessionId") as sessions,
@@ -270,7 +273,9 @@ export class SegmentsService {
     `;
 
     try {
-      const result = await this.dataSource.query(metricsQuery, [startDate, endDate]);
+      const params: unknown[] = [startDate, endDate];
+      if (corpId !== null) params.push(corpId);
+      const result = await this.dataSource.query(metricsQuery, params);
       const row = result[0] || {};
 
       return {