diff --git a/modules/sharethroughBidAdapter.js b/modules/sharethroughBidAdapter.js
index 92d36b0b699..efa0bb3471b 100644
--- a/modules/sharethroughBidAdapter.js
+++ b/modules/sharethroughBidAdapter.js
@@ -68,6 +68,11 @@ export const sharethroughAdapterSpec = {
       req.device.ext['cdep'] = bidderRequest.ortb2.device.ext.cdep;
     }
 
+    // if present, merge device object from ortb2 into `req.device`
+    if (bidderRequest?.ortb2?.device) {
+      mergeDeep(req.device, bidderRequest.ortb2.device);
+    }
+
     req.user = nullish(firstPartyData.user, {});
     if (!req.user.ext) req.user.ext = {};
     req.user.ext.eids = bidRequests[0].userIdAsEids || [];
diff --git a/test/spec/modules/sharethroughBidAdapter_spec.js b/test/spec/modules/sharethroughBidAdapter_spec.js
index 8fc29a2cef3..77619dee528 100644
--- a/test/spec/modules/sharethroughBidAdapter_spec.js
+++ b/test/spec/modules/sharethroughBidAdapter_spec.js
@@ -346,6 +346,41 @@ describe('sharethrough adapter spec', function () {
 
           expect(openRtbReq.user.ext.eids).to.deep.equal([]);
         });
+
+        it('should add ORTB2 device data to the request', () => {
+          const bidderRequestWithOrtb2Device = {
+            ...bidderRequest,
+            ...{
+              ortb2: {
+                device: {
+                  w: 980,
+                  h: 1720,
+                  dnt: 0,
+                  ua: 'Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/125.0.6422.80 Mobile/15E148 Safari/604.1',
+                  language: 'en',
+                  devicetype: 1,
+                  make: 'Apple',
+                  model: 'iPhone 12 Pro Max',
+                  os: 'iOS',
+                  osv: '17.4',
+                },
+              },
+            },
+          };
+
+          const [request] = spec.buildRequests(bidRequests, bidderRequestWithOrtb2Device);
+
+          expect(request.data.device.w).to.equal(bidderRequestWithOrtb2Device.ortb2.device.w);
+          expect(request.data.device.h).to.equal(bidderRequestWithOrtb2Device.ortb2.device.h);
+          expect(request.data.device.dnt).to.equal(bidderRequestWithOrtb2Device.ortb2.device.dnt);
+          expect(request.data.device.ua).to.equal(bidderRequestWithOrtb2Device.ortb2.device.ua);
+          expect(request.data.device.language).to.equal(bidderRequestWithOrtb2Device.ortb2.device.language);
+          expect(request.data.device.devicetype).to.equal(bidderRequestWithOrtb2Device.ortb2.device.devicetype);
+          expect(request.data.device.make).to.equal(bidderRequestWithOrtb2Device.ortb2.device.make);
+          expect(request.data.device.model).to.equal(bidderRequestWithOrtb2Device.ortb2.device.model);
+          expect(request.data.device.os).to.equal(bidderRequestWithOrtb2Device.ortb2.device.os);
+          expect(request.data.device.osv).to.equal(bidderRequestWithOrtb2Device.ortb2.device.osv);
+        });
       });
 
       describe('no referer provided', () => {