diff --git a/packages/audience/core/src/attribution.test.ts b/packages/audience/core/src/attribution.test.ts
index b742260a35..033675ddcd 100644
--- a/packages/audience/core/src/attribution.test.ts
+++ b/packages/audience/core/src/attribution.test.ts
@@ -1,4 +1,4 @@
-import { collectAttribution, clearAttribution } from './attribution';
+import { collectSessionAttribution, collectPageAttribution, clearAttribution } from './attribution';
 
 const STORAGE_KEY = '__imtbl_attribution';
 
@@ -15,13 +15,13 @@ function setLocation(url: string) {
   });
 }
 
-describe('collectAttribution', () => {
+describe('collectSessionAttribution', () => {
   it('parses UTM parameters from the URL', () => {
     setLocation(
       'https://example.com/?utm_source=google&utm_medium=cpc&utm_campaign=spring&utm_content=banner&utm_term=nft',
     );
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.utm_source).toBe('google');
     expect(result.utm_medium).toBe('cpc');
     expect(result.utm_campaign).toBe('spring');
@@ -34,7 +34,7 @@ describe('collectAttribution', () => {
       'https://example.com/?gclid=abc&dclid=dc1&fbclid=fb2&ttclid=tt3&msclkid=ms4&li_fat_id=li5',
     );
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.gclid).toBe('abc');
     expect(result.dclid).toBe('dc1');
     expect(result.fbclid).toBe('fb2');
@@ -50,7 +50,7 @@ describe('collectAttribution', () => {
       configurable: true,
     });
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.referrer).toBe('https://google.com/search?q=nft');
     expect(result.landing_page).toBe('https://game.example.com/landing');
   });
@@ -58,33 +58,33 @@ describe('collectAttribution', () => {
   it('caches in sessionStorage and returns cached on second call', () => {
     setLocation('https://example.com/?utm_source=google');
 
-    const first = collectAttribution();
+    const first = collectSessionAttribution();
     expect(first.utm_source).toBe('google');
 
     // Change URL — should still return cached value
     setLocation('https://example.com/?utm_source=facebook');
-    const second = collectAttribution();
+    const second = collectSessionAttribution();
     expect(second.utm_source).toBe('google');
   });
 
   it('parses referral_code from the URL', () => {
     setLocation('https://example.com/?referral_code=PARTNER42');
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.referral_code).toBe('PARTNER42');
   });
 
   it('sets touchpoint_type to click when UTMs are present', () => {
     setLocation('https://example.com/?utm_source=google');
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.touchpoint_type).toBe('click');
   });
 
   it('sets touchpoint_type to click when a click ID is present', () => {
     setLocation('https://example.com/?gclid=abc123');
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.touchpoint_type).toBe('click');
   });
 
@@ -92,7 +92,7 @@ describe('collectAttribution', () => {
     setLocation('https://example.com/');
     Object.defineProperty(document, 'referrer', { value: 'https://other.com', configurable: true });
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.touchpoint_type).toBeUndefined();
   });
 
@@ -100,7 +100,7 @@ describe('collectAttribution', () => {
     setLocation('https://example.com/');
     Object.defineProperty(document, 'referrer', { value: '', configurable: true });
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.utm_source).toBeUndefined();
     expect(result.gclid).toBeUndefined();
     expect(result.referrer).toBeUndefined();
@@ -115,15 +115,61 @@ describe('collectAttribution', () => {
       throw new Error('storage disabled');
     });
 
-    const result = collectAttribution();
+    const result = collectSessionAttribution();
     expect(result.utm_source).toBe('twitter');
   });
 });
 
+describe('collectPageAttribution', () => {
+  it('always parses from the current URL, ignoring sessionStorage', () => {
+    setLocation('https://example.com/?utm_source=google');
+    collectSessionAttribution(); // seeds sessionStorage
+
+    // Change URL — collectSessionAttribution would return cached 'google',
+    // but collectPageAttribution reads the new URL.
+    setLocation('https://example.com/?utm_source=facebook');
+    const result = collectPageAttribution();
+    expect(result.utm_source).toBe('facebook');
+  });
+
+  it('does not write to sessionStorage', () => {
+    setLocation('https://example.com/?utm_source=twitter');
+
+    collectPageAttribution();
+    expect(sessionStorage.getItem(STORAGE_KEY)).toBeNull();
+  });
+
+  it('does not include landing_page', () => {
+    setLocation('https://example.com/?utm_source=google');
+
+    const result = collectPageAttribution();
+    expect(result.utm_source).toBe('google');
+    expect(result.landing_page).toBeUndefined();
+  });
+
+  it('sets touchpoint_type to click when UTMs are present', () => {
+    setLocation('https://example.com/?utm_source=google');
+
+    const result = collectPageAttribution();
+    expect(result.touchpoint_type).toBe('click');
+  });
+
+  it('captures referrer', () => {
+    setLocation('https://example.com/');
+    Object.defineProperty(document, 'referrer', {
+      value: 'https://google.com/',
+      configurable: true,
+    });
+
+    const result = collectPageAttribution();
+    expect(result.referrer).toBe('https://google.com/');
+  });
+});
+
 describe('clearAttribution', () => {
   it('removes cached attribution from sessionStorage', () => {
     setLocation('https://example.com/?utm_source=google');
-    collectAttribution();
+    collectSessionAttribution();
     expect(sessionStorage.getItem(STORAGE_KEY)).not.toBeNull();
 
     clearAttribution();
diff --git a/packages/audience/core/src/attribution.ts b/packages/audience/core/src/attribution.ts
index 0046ba054d..d6264bbddc 100644
--- a/packages/audience/core/src/attribution.ts
+++ b/packages/audience/core/src/attribution.ts
@@ -78,33 +78,49 @@ function saveToStorage(attribution: Attribution): void {
   }
 }
 
-export function collectAttribution(): Attribution {
-  const cached = loadFromStorage();
-  if (cached) return cached;
-
+function buildAttribution(): Attribution {
   const urlParams = typeof window !== 'undefined' && window.location
     ? parseParams(window.location.href)
     : {};
 
   const referrer = typeof document !== 'undefined' ? document.referrer || undefined : undefined;
-  const landingPage = typeof window !== 'undefined' && window.location
-    ? window.location.href
-    : undefined;
 
   const hasClickId = CLICK_ID_PARAMS.some((key) => key in urlParams);
   const hasUtm = UTM_PARAMS.some((key) => key in urlParams);
 
-  const attribution: Attribution = {
+  return {
     ...urlParams,
     referrer,
-    landing_page: landingPage,
     touchpoint_type: hasClickId || hasUtm ? 'click' : undefined,
   };
+}
+
+export function collectSessionAttribution(): Attribution {
+  const cached = loadFromStorage();
+  if (cached) return cached;
+
+  const landingPage = typeof window !== 'undefined' && window.location
+    ? window.location.href
+    : undefined;
+
+  const attribution: Attribution = {
+    ...buildAttribution(),
+    landing_page: landingPage,
+  };
 
   saveToStorage(attribution);
   return attribution;
 }
 
+/**
+ * Parse attribution from the current URL without reading or writing
+ * sessionStorage. Returns the UTM / click-ID params on the URL right
+ * now, not the ones cached at session start.
+ */
+export function collectPageAttribution(): Attribution {
+  return buildAttribution();
+}
+
 export function clearAttribution(): void {
   try {
     sessionStorage.removeItem(STORAGE_KEY);
diff --git a/packages/audience/core/src/index.ts b/packages/audience/core/src/index.ts
index f7404a93e8..0af3ff284a 100644
--- a/packages/audience/core/src/index.ts
+++ b/packages/audience/core/src/index.ts
@@ -41,7 +41,7 @@ export { isTimestampValid, isAliasValid, truncate } from './validation';
 export { getOrCreateSession } from './session';
 export type { SessionResult } from './session';
 
-export { collectAttribution } from './attribution';
+export { collectSessionAttribution, collectPageAttribution } from './attribution';
 export type { Attribution } from './attribution';
 
 export {
diff --git a/packages/audience/pixel/src/bootstrap.test.ts b/packages/audience/pixel/src/bootstrap.test.ts
index bb8d7778b7..3d031a16b9 100644
--- a/packages/audience/pixel/src/bootstrap.test.ts
+++ b/packages/audience/pixel/src/bootstrap.test.ts
@@ -27,7 +27,7 @@ jest.mock('@imtbl/audience-core', () => ({
   isBrowser: jest.fn().mockReturnValue(true),
   getCookie: jest.fn(),
   setCookie: jest.fn(),
-  collectAttribution: jest.fn().mockReturnValue({}),
+  collectSessionAttribution: jest.fn().mockReturnValue({}),
   getOrCreateSession: jest.fn().mockReturnValue({ sessionId: 's', isNew: false }),
   createConsentManager: jest.fn().mockReturnValue({ level: 'none', setLevel: jest.fn() }),
 }));
diff --git a/packages/audience/pixel/src/pixel.test.ts b/packages/audience/pixel/src/pixel.test.ts
index a2dd053576..bef2e9d29e 100644
--- a/packages/audience/pixel/src/pixel.test.ts
+++ b/packages/audience/pixel/src/pixel.test.ts
@@ -44,7 +44,7 @@ jest.mock('@imtbl/audience-core', () => ({
   isBrowser: jest.fn().mockReturnValue(true),
   getCookie: jest.fn(),
   setCookie: jest.fn(),
-  collectAttribution: jest.fn().mockReturnValue({
+  collectSessionAttribution: jest.fn().mockReturnValue({
     utm_source: 'google',
     landing_page: 'https://example.com',
   }),
diff --git a/packages/audience/pixel/src/pixel.ts b/packages/audience/pixel/src/pixel.ts
index 79c9edf42d..a3b3f433b9 100644
--- a/packages/audience/pixel/src/pixel.ts
+++ b/packages/audience/pixel/src/pixel.ts
@@ -14,7 +14,7 @@ import {
   getTimestamp,
   isBrowser,
   getCookie,
-  collectAttribution,
+  collectSessionAttribution,
   getOrCreateSession,
   createConsentManager,
   canTrack,
@@ -132,7 +132,7 @@ export class Pixel {
 
     const { sessionId, isNew } = getOrCreateSession(this.domain);
     this.refreshSession(sessionId, isNew);
-    const attribution = collectAttribution();
+    const attribution = collectSessionAttribution();
     const thirdPartyIds = this.collectThirdPartyIds();
 
     const message: PageMessage = {
diff --git a/packages/audience/sdk/jest.config.ts b/packages/audience/sdk/jest.config.ts
index 323ad11b09..499e8aa989 100644
--- a/packages/audience/sdk/jest.config.ts
+++ b/packages/audience/sdk/jest.config.ts
@@ -9,6 +9,10 @@ const config: Config = {
   },
   moduleNameMapper: {
     '^@imtbl/audience-core$': '<rootDir>/../core/src/index.ts',
+    // The core source code imports other @imtbl packages (e.g. metrics).
+    // This tells jest where to find them so we can run tests without
+    // building the whole monorepo first.
+    '^@imtbl/(.*)$': '<rootDir>/../../../node_modules/@imtbl/$1/src',
   },
 };
 
diff --git a/packages/audience/sdk/src/sdk.test.ts b/packages/audience/sdk/src/sdk.test.ts
index d2737fb8a0..a36ac07a20 100644
--- a/packages/audience/sdk/src/sdk.test.ts
+++ b/packages/audience/sdk/src/sdk.test.ts
@@ -184,6 +184,7 @@ describe('Audience', () => {
 
       expect(msg).toBeDefined();
       expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
         currency: 'USD',
         value: 9.99,
         itemId: 'sword_01',
@@ -235,7 +236,7 @@ describe('Audience', () => {
       sdk.shutdown();
     });
 
-    it('enqueues sign_up with method property', async () => {
+    it('enqueues sign_up with method property and sessionId', async () => {
       const sdk = createSDK();
 
       sdk.track('sign_up', { method: 'email' });
@@ -245,7 +246,10 @@ describe('Audience', () => {
         (m: any) => m.type === 'track' && m.eventName === 'sign_up',
       );
       expect(msg).toBeDefined();
-      expect(msg.properties).toEqual({ method: 'email' });
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        method: 'email',
+      });
 
       sdk.shutdown();
     });
@@ -265,6 +269,7 @@ describe('Audience', () => {
       );
       expect(msg).toBeDefined();
       expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
         platform: 'webgl',
         version: '1.2.0',
         buildId: 'ci-42',
@@ -291,6 +296,7 @@ describe('Audience', () => {
       );
       expect(msg).toBeDefined();
       expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
         status: 'complete',
         world: 'forest',
         level: '5',
@@ -319,6 +325,7 @@ describe('Audience', () => {
       );
       expect(msg).toBeDefined();
       expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
         flow: 'source',
         currency: 'gold',
         amount: 50,
@@ -344,6 +351,7 @@ describe('Audience', () => {
       );
       expect(msg).toBeDefined();
       expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
         gameId: 'devilfish',
         source: 'game_page',
         platform: 'steam',
@@ -351,6 +359,121 @@ describe('Audience', () => {
 
       sdk.shutdown();
     });
+
+    it('attaches UTM attribution to sign_up events', async () => {
+      Object.defineProperty(window, 'location', {
+        value: {
+          ...window.location,
+          search: '?utm_source=google&utm_campaign=spring',
+          href: 'https://studio.com/?utm_source=google&utm_campaign=spring',
+          protocol: 'https:',
+          pathname: '/',
+        },
+        writable: true,
+        configurable: true,
+      });
+      sessionStorage.clear();
+
+      const sdk = createSDK();
+      sdk.track('sign_up', { method: 'passport' });
+      await sdk.flush();
+
+      const msg = sentMessages().find(
+        (m: any) => m.type === 'track' && m.eventName === 'sign_up',
+      );
+      expect(msg).toBeDefined();
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        utm_source: 'google',
+        utm_campaign: 'spring',
+        touchpoint_type: 'click',
+        method: 'passport',
+      });
+
+      sdk.shutdown();
+    });
+
+    it('attaches UTM attribution to link_clicked events', async () => {
+      Object.defineProperty(window, 'location', {
+        value: {
+          ...window.location,
+          search: '?utm_source=twitter',
+          href: 'https://studio.com/?utm_source=twitter',
+          protocol: 'https:',
+          pathname: '/',
+        },
+        writable: true,
+        configurable: true,
+      });
+      sessionStorage.clear();
+
+      const sdk = createSDK();
+      sdk.track('link_clicked', { url: 'https://store.com', label: 'Buy' });
+      await sdk.flush();
+
+      const msg = sentMessages().find(
+        (m: any) => m.type === 'track' && m.eventName === 'link_clicked',
+      );
+      expect(msg).toBeDefined();
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        utm_source: 'twitter',
+        touchpoint_type: 'click',
+        url: 'https://store.com',
+        label: 'Buy',
+      });
+
+      sdk.shutdown();
+    });
+
+    it('does not attach UTM attribution to other track events', async () => {
+      Object.defineProperty(window, 'location', {
+        value: {
+          ...window.location,
+          search: '?utm_source=google',
+          href: 'https://studio.com/?utm_source=google',
+          protocol: 'https:',
+          pathname: '/',
+        },
+        writable: true,
+        configurable: true,
+      });
+      sessionStorage.clear();
+
+      const sdk = createSDK();
+      sdk.track('purchase', { currency: 'USD', value: 9.99 });
+      await sdk.flush();
+
+      const msg = sentMessages().find(
+        (m: any) => m.type === 'track' && m.eventName === 'purchase',
+      );
+      expect(msg).toBeDefined();
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        currency: 'USD',
+        value: 9.99,
+      });
+
+      sdk.shutdown();
+    });
+
+    it('includes sessionId on all track events', async () => {
+      const sdk = createSDK();
+
+      sdk.track('game_launch', { platform: 'webgl' });
+      await sdk.flush();
+
+      const msg = sentMessages().find(
+        (m: any) => m.type === 'track' && m.eventName === 'game_launch',
+      );
+      expect(msg).toBeDefined();
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        platform: 'webgl',
+      });
+
+      sdk.shutdown();
+    });
   });
 
   describe('page', () => {
@@ -362,7 +485,12 @@ describe('Audience', () => {
 
       const msg = sentMessages().find((m: any) => m.type === 'page');
       expect(msg).toBeDefined();
-      expect(msg.properties).toMatchObject({ section: 'shop' });
+      // First page merges session-cached attribution (includes landing_page)
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        landing_page: expect.any(String),
+        section: 'shop',
+      });
 
       sdk.shutdown();
     });
@@ -406,7 +534,7 @@ describe('Audience', () => {
       sdk.shutdown();
     });
 
-    it('attaches attribution to the first page view', async () => {
+    it('attaches attribution to the first page view only', async () => {
       Object.defineProperty(window, 'location', {
         value: {
           ...window.location,
@@ -438,6 +566,22 @@ describe('Audience', () => {
 
       sdk.shutdown();
     });
+
+    it('includes sessionId in page properties', async () => {
+      const sdk = createSDK();
+
+      sdk.page();
+      await sdk.flush();
+
+      const msg = sentMessages().find((m: any) => m.type === 'page');
+      expect(msg).toBeDefined();
+      expect(msg.properties).toEqual({
+        sessionId: expect.any(String),
+        landing_page: expect.any(String),
+      });
+
+      sdk.shutdown();
+    });
   });
 
   describe('identify', () => {
diff --git a/packages/audience/sdk/src/sdk.ts b/packages/audience/sdk/src/sdk.ts
index 74bbd61179..42837610b0 100644
--- a/packages/audience/sdk/src/sdk.ts
+++ b/packages/audience/sdk/src/sdk.ts
@@ -20,7 +20,8 @@ import {
   isTimestampValid,
   truncate,
   collectContext,
-  collectAttribution,
+  collectSessionAttribution,
+  collectPageAttribution,
   getOrCreateSession,
   createConsentManager,
   canTrack,
@@ -35,6 +36,11 @@ import {
   LIBRARY_NAME, LIBRARY_VERSION, LOG_PREFIX, DEFAULT_CONSENT_SOURCE,
 } from './config';
 
+/** Track events that carry UTM attribution from the current page URL. */
+const UTM_EVENTS: ReadonlySet<string> = new Set([
+  'sign_up', 'link_clicked',
+]);
+
 /**
  * Track player activity on your website — page views, purchases, sign-ups —
  * and tie it to player identity when they log in.
@@ -110,7 +116,7 @@ export class Audience {
       config.baseUrl,
     );
 
-    this.attribution = collectAttribution();
+    this.attribution = collectSessionAttribution();
 
     if (!this.isTrackingDisabled()) {
       this.queue.start();
@@ -209,14 +215,18 @@ export class Audience {
 
   /**
    * Record a page view. Call this on every route change in your app.
-   * The first call automatically captures how the player arrived
-   * (UTM params, ad click IDs, referrer). No-op when consent is 'none'.
+   * The first call captures how the player arrived (UTM params, ad click
+   * IDs, referrer). Every call includes the session ID.
+   * No-op when consent is 'none'.
    */
   page(properties?: Record<string, unknown>): void {
     if (this.isTrackingDisabled()) return;
     getOrCreateSession(this.cookieDomain);
 
-    const mergedProps: Record<string, unknown> = { ...properties };
+    const mergedProps: Record<string, unknown> = {
+      sessionId: this.sessionId,
+      ...properties,
+    };
     if (this.isFirstPage) {
       Object.assign(mergedProps, this.attribution);
       this.isFirstPage = false;
@@ -225,7 +235,7 @@ export class Audience {
     this.enqueue('page', {
       ...this.baseMessage(),
       type: 'page',
-      properties: Object.keys(mergedProps).length > 0 ? mergedProps : undefined,
+      properties: mergedProps,
       userId: this.effectiveUserId(),
     });
   }
@@ -237,6 +247,10 @@ export class Audience {
    * Pass the event name and any properties you want to analyse later.
    * For the predefined event names (`sign_up`, `purchase`, etc.),
    * TypeScript enforces the property shape at the call site.
+   *
+   * `sign_up` and `link_clicked` events automatically include UTM
+   * attribution from the current page URL. All events include `sessionId`.
+   *
    * No-op when consent is 'none'.
    */
   track<E extends AudienceEventName | string & {}>(
@@ -249,11 +263,17 @@ export class Audience {
     getOrCreateSession(this.cookieDomain);
 
     const [properties] = args;
+    const mergedProps: Record<string, unknown> = {
+      sessionId: this.sessionId,
+      ...(UTM_EVENTS.has(event) ? collectPageAttribution() : {}),
+      ...properties as Record<string, unknown> | undefined,
+    };
+
     this.enqueue('track', {
       ...this.baseMessage(),
       type: 'track',
       eventName: truncate(event),
-      properties: properties as Record<string, unknown> | undefined,
+      properties: mergedProps,
       userId: this.effectiveUserId(),
     });
   }