diff --git a/src/actions/moving-motivators.ts b/src/actions/moving-motivators.ts
index e22df7d..a1789a9 100644
--- a/src/actions/moving-motivators.ts
+++ b/src/actions/moving-motivators.ts
@@ -16,6 +16,16 @@ export async function createMotivatorSession(data: { title: string; participant:
 
   try {
     const motivatorSession = await motivatorsService.createMotivatorSession(session.user.id, data);
+    try {
+      await motivatorsService.shareMotivatorSession(
+        motivatorSession.id,
+        session.user.id,
+        data.participant,
+        'EDITOR'
+      );
+    } catch (shareError) {
+      console.error('Auto-share failed:', shareError);
+    }
     revalidatePath('/motivators');
     return { success: true, data: motivatorSession };
   } catch (error) {
diff --git a/src/actions/weekly-checkin.ts b/src/actions/weekly-checkin.ts
index 5c6cbc2..929721e 100644
--- a/src/actions/weekly-checkin.ts
+++ b/src/actions/weekly-checkin.ts
@@ -24,6 +24,16 @@ export async function createWeeklyCheckInSession(data: {
       session.user.id,
       data
     );
+    try {
+      await weeklyCheckInService.shareWeeklyCheckInSession(
+        weeklyCheckInSession.id,
+        session.user.id,
+        data.participant,
+        'EDITOR'
+      );
+    } catch (shareError) {
+      console.error('Auto-share failed:', shareError);
+    }
     revalidatePath('/weekly-checkin');
     revalidatePath('/sessions');
     return { success: true, data: weeklyCheckInSession };
diff --git a/src/actions/year-review.ts b/src/actions/year-review.ts
index 5e01b84..6eefc69 100644
--- a/src/actions/year-review.ts
+++ b/src/actions/year-review.ts
@@ -24,6 +24,16 @@ export async function createYearReviewSession(data: {
       session.user.id,
       data
     );
+    try {
+      await yearReviewService.shareYearReviewSession(
+        yearReviewSession.id,
+        session.user.id,
+        data.participant,
+        'EDITOR'
+      );
+    } catch (shareError) {
+      console.error('Auto-share failed:', shareError);
+    }
     revalidatePath('/year-review');
     revalidatePath('/sessions');
     return { success: true, data: yearReviewSession };
diff --git a/src/app/api/sessions/route.ts b/src/app/api/sessions/route.ts
index 30d6f03..99ea0b7 100644
--- a/src/app/api/sessions/route.ts
+++ b/src/app/api/sessions/route.ts
@@ -1,6 +1,7 @@
 import { NextResponse } from 'next/server';
 import { auth } from '@/lib/auth';
 import { prisma } from '@/services/database';
+import { shareSession } from '@/services/sessions';
 
 export async function GET() {
   try {
@@ -56,6 +57,12 @@ export async function POST(request: Request) {
       },
     });
 
+    try {
+      await shareSession(newSession.id, session.user.id, collaborator, 'EDITOR');
+    } catch (shareError) {
+      console.error('Auto-share failed:', shareError);
+    }
+
     return NextResponse.json(newSession, { status: 201 });
   } catch (error) {
     console.error('Error creating session:', error);
diff --git a/src/app/api/teams/members/route.ts b/src/app/api/teams/members/route.ts
new file mode 100644
index 0000000..75089ad
--- /dev/null
+++ b/src/app/api/teams/members/route.ts
@@ -0,0 +1,31 @@
+import { NextResponse } from 'next/server';
+import { auth } from '@/lib/auth';
+import { getUserTeams } from '@/services/teams';
+import { getTeamMembersForShare } from '@/lib/share-utils';
+
+export async function GET() {
+  try {
+    const session = await auth();
+
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: 'Non autorisé' }, { status: 401 });
+    }
+
+    const teams = await getUserTeams(session.user.id);
+    const otherMembers = getTeamMembersForShare(teams, session.user.id);
+    const currentUser = {
+      id: session.user.id,
+      email: session.user.email ?? '',
+      name: session.user.name ?? null,
+    };
+    const members = [currentUser, ...otherMembers];
+
+    return NextResponse.json({ members });
+  } catch (error) {
+    console.error('Error fetching team members:', error);
+    return NextResponse.json(
+      { error: 'Erreur lors de la récupération des membres' },
+      { status: 500 }
+    );
+  }
+}
diff --git a/src/app/motivators/new/page.tsx b/src/app/motivators/new/page.tsx
index 61a113d..ed18583 100644
--- a/src/app/motivators/new/page.tsx
+++ b/src/app/motivators/new/page.tsx
@@ -10,6 +10,7 @@ import {
   CardContent,
   Button,
   Input,
+  ParticipantInput,
 } from '@/components/ui';
 import { createMotivatorSession } from '@/actions/moving-motivators';
 
@@ -72,12 +73,7 @@ export default function NewMotivatorSessionPage() {
               required
             />
 
-            <Input
-              label="Nom du participant"
-              name="participant"
-              placeholder="Ex: Jean Dupont"
-              required
-            />
+            <ParticipantInput name="participant" required />
 
             <div className="rounded-lg border border-border bg-card-hover p-4">
               <h3 className="font-medium text-foreground mb-2">Comment ça marche ?</h3>
diff --git a/src/app/sessions/new/page.tsx b/src/app/sessions/new/page.tsx
index 381a732..a56082e 100644
--- a/src/app/sessions/new/page.tsx
+++ b/src/app/sessions/new/page.tsx
@@ -10,6 +10,7 @@ import {
   CardContent,
   Button,
   Input,
+  ParticipantInput,
 } from '@/components/ui';
 
 export default function NewSessionPage() {
@@ -82,12 +83,7 @@ export default function NewSessionPage() {
               required
             />
 
-            <Input
-              label="Nom du collaborateur"
-              name="collaborator"
-              placeholder="Ex: Jean Dupont"
-              required
-            />
+            <ParticipantInput name="collaborator" required />
 
             <div className="flex gap-3 pt-4">
               <Button
diff --git a/src/app/weekly-checkin/new/page.tsx b/src/app/weekly-checkin/new/page.tsx
index 63d06f4..c659fde 100644
--- a/src/app/weekly-checkin/new/page.tsx
+++ b/src/app/weekly-checkin/new/page.tsx
@@ -10,6 +10,7 @@ import {
   CardContent,
   Button,
   Input,
+  ParticipantInput,
 } from '@/components/ui';
 import { createWeeklyCheckInSession } from '@/actions/weekly-checkin';
 import { getWeekYearLabel } from '@/lib/date-utils';
@@ -93,12 +94,7 @@ export default function NewWeeklyCheckInPage() {
               required
             />
 
-            <Input
-              label="Nom du collaborateur"
-              name="participant"
-              placeholder="Ex: Jean Dupont"
-              required
-            />
+            <ParticipantInput name="participant" required />
 
             <div>
               <label htmlFor="date" className="block text-sm font-medium text-foreground mb-1">
diff --git a/src/app/year-review/new/page.tsx b/src/app/year-review/new/page.tsx
index dbae987..1b3ddd1 100644
--- a/src/app/year-review/new/page.tsx
+++ b/src/app/year-review/new/page.tsx
@@ -10,6 +10,7 @@ import {
   CardContent,
   Button,
   Input,
+  ParticipantInput,
 } from '@/components/ui';
 import { createYearReviewSession } from '@/actions/year-review';
 
@@ -76,12 +77,7 @@ export default function NewYearReviewPage() {
               required
             />
 
-            <Input
-              label="Nom du participant"
-              name="participant"
-              placeholder="Ex: Jean Dupont"
-              required
-            />
+            <ParticipantInput name="participant" required />
 
             <div>
               <label htmlFor="year" className="block text-sm font-medium text-foreground mb-1">
diff --git a/src/components/ui/ParticipantInput.tsx b/src/components/ui/ParticipantInput.tsx
new file mode 100644
index 0000000..e1ab1fa
--- /dev/null
+++ b/src/components/ui/ParticipantInput.tsx
@@ -0,0 +1,56 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { Select } from '@/components/ui';
+
+interface TeamMemberUser {
+  id: string;
+  email: string;
+  name: string | null;
+}
+
+interface ParticipantInputProps {
+  name: string;
+  label?: string;
+  required?: boolean;
+}
+
+export function ParticipantInput({
+  name,
+  label = "Choisir un membre de l'équipe",
+  required = true,
+}: ParticipantInputProps) {
+  const [teamMembers, setTeamMembers] = useState<TeamMemberUser[]>([]);
+  const [value, setValue] = useState('');
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    fetch('/api/teams/members')
+      .then((res) => res.json())
+      .then((data) => setTeamMembers(data.members ?? []))
+      .catch(() => setTeamMembers([]))
+      .finally(() => setLoading(false));
+  }, []);
+
+  const options =
+    teamMembers.length > 0
+      ? teamMembers.map((m) => ({
+          value: m.email,
+          label: m.name ? `${m.name} (${m.email})` : m.email,
+        }))
+      : [{ value: '', label: 'Aucun membre dans vos équipes', disabled: true }];
+
+  if (loading) return null;
+
+  return (
+    <Select
+      name={name}
+      label={label}
+      options={options}
+      placeholder={teamMembers.length > 0 ? '— Sélectionner —' : undefined}
+      value={value}
+      onChange={(e) => setValue(e.target.value)}
+      required={required}
+    />
+  );
+}
diff --git a/src/components/ui/index.ts b/src/components/ui/index.ts
index 975de98..2c6e972 100644
--- a/src/components/ui/index.ts
+++ b/src/components/ui/index.ts
@@ -10,6 +10,7 @@ export { EditableYearReviewTitle } from './EditableYearReviewTitle';
 export { EditableWeeklyCheckInTitle } from './EditableWeeklyCheckInTitle';
 export { EditableWeatherTitle } from './EditableWeatherTitle';
 export { Input } from './Input';
+export { ParticipantInput } from './ParticipantInput';
 export { Modal, ModalFooter } from './Modal';
 export { RocketIcon } from './RocketIcon';
 export { Select } from './Select';