diff --git a/src/main/java/org/prebid/server/bidder/openx/OpenxBidder.java b/src/main/java/org/prebid/server/bidder/openx/OpenxBidder.java
index 09412abe65f..00a8c8dc3fb 100644
--- a/src/main/java/org/prebid/server/bidder/openx/OpenxBidder.java
+++ b/src/main/java/org/prebid/server/bidder/openx/OpenxBidder.java
@@ -17,6 +17,7 @@
 import org.prebid.server.bidder.model.HttpRequest;
 import org.prebid.server.bidder.model.Result;
 import org.prebid.server.bidder.openx.model.OpenxImpType;
+import org.prebid.server.bidder.openx.proto.OpenxBidExt;
 import org.prebid.server.bidder.openx.proto.OpenxBidResponse;
 import org.prebid.server.bidder.openx.proto.OpenxBidResponseExt;
 import org.prebid.server.bidder.openx.proto.OpenxRequestExt;
@@ -29,6 +30,8 @@
 import org.prebid.server.proto.openrtb.ext.request.ExtRequest;
 import org.prebid.server.proto.openrtb.ext.request.openx.ExtImpOpenx;
 import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebid;
+import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebidMeta;
 import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebidVideo;
 import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
 import org.prebid.server.proto.openrtb.ext.response.ExtIgiIgs;
@@ -270,13 +273,13 @@ private ObjectNode makeImpExt(ObjectNode impExt, boolean addCustomParams) {
         return openxImpExt;
     }
 
-    private static List<BidderBid> extractBids(BidRequest bidRequest, OpenxBidResponse bidResponse) {
+    private List<BidderBid> extractBids(BidRequest bidRequest, OpenxBidResponse bidResponse) {
         return bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())
                 ? Collections.emptyList()
                 : bidsFromResponse(bidRequest, bidResponse);
     }
 
-    private static List<BidderBid> bidsFromResponse(BidRequest bidRequest, OpenxBidResponse bidResponse) {
+    private List<BidderBid> bidsFromResponse(BidRequest bidRequest, OpenxBidResponse bidResponse) {
         final Map<String, BidType> impIdToBidType = impIdToBidType(bidRequest);
 
         final String bidCurrency = StringUtils.isNotBlank(bidResponse.getCur())
@@ -292,11 +295,11 @@ private static List<BidderBid> bidsFromResponse(BidRequest bidRequest, OpenxBidR
                 .toList();
     }
 
-    private static BidderBid toBidderBid(Bid bid, Map<String, BidType> impIdToBidType, String bidCurrency) {
+    private BidderBid toBidderBid(Bid bid, Map<String, BidType> impIdToBidType, String bidCurrency) {
         final BidType bidType = getBidType(bid, impIdToBidType);
         final ExtBidPrebidVideo videoInfo = bidType == BidType.video ? getVideoInfo(bid) : null;
         return BidderBid.builder()
-                .bid(bid)
+                .bid(bid.toBuilder().ext(getBidExt(bid)).build())
                 .type(bidType)
                 .bidCurrency(bidCurrency)
                 .videoInfo(videoInfo)
@@ -334,4 +337,48 @@ private static List<ExtIgi> extractIgi(OpenxBidResponse bidResponse) {
 
         return igs.isEmpty() ? null : Collections.singletonList(ExtIgi.builder().igs(igs).build());
     }
+
+    private ObjectNode getBidExt(Bid bid) {
+        final ObjectNode ext = bid.getExt();
+        if (ext == null) {
+            return null;
+        }
+
+        final OpenxBidExt openxBidExt = parseOpenxBidExt(ext);
+        final Integer buyerId = parseStringToInt(openxBidExt.getBuyerId());
+        final Integer dspId = parseStringToInt(openxBidExt.getDspId());
+        final Integer brandId = parseStringToInt(openxBidExt.getBrandId());
+
+        if (buyerId == null && dspId == null && brandId == null) {
+            return ext;
+        }
+
+        final ExtBidPrebidMeta meta = ExtBidPrebidMeta.builder()
+                .networkId(dspId)
+                .advertiserId(buyerId)
+                .brandId(brandId)
+                .build();
+
+        final ExtBidPrebid extBidPrebid = ExtBidPrebid.builder().meta(meta).build();
+
+        ext.set(PREBID_EXT, mapper.mapper().valueToTree(extBidPrebid));
+
+        return ext;
+    }
+
+    private OpenxBidExt parseOpenxBidExt(ObjectNode ext) {
+        try {
+            return mapper.mapper().convertValue(ext, OpenxBidExt.class);
+        } catch (IllegalArgumentException e) {
+            return OpenxBidExt.builder().build();
+        }
+    }
+
+    private static Integer parseStringToInt(String value) {
+        try {
+            return Integer.parseInt(value);
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
 }
diff --git a/src/main/java/org/prebid/server/bidder/openx/proto/OpenxBidExt.java b/src/main/java/org/prebid/server/bidder/openx/proto/OpenxBidExt.java
new file mode 100644
index 00000000000..00305cfb64b
--- /dev/null
+++ b/src/main/java/org/prebid/server/bidder/openx/proto/OpenxBidExt.java
@@ -0,0 +1,15 @@
+package org.prebid.server.bidder.openx.proto;
+
+import lombok.Builder;
+import lombok.Value;
+
+@Builder
+@Value
+public class OpenxBidExt {
+
+    String dspId;
+
+    String buyerId;
+
+    String brandId;
+}
diff --git a/src/test/java/org/prebid/server/bidder/openx/OpenxBidderTest.java b/src/test/java/org/prebid/server/bidder/openx/OpenxBidderTest.java
index 461f300c051..fab9bedceb7 100644
--- a/src/test/java/org/prebid/server/bidder/openx/OpenxBidderTest.java
+++ b/src/test/java/org/prebid/server/bidder/openx/OpenxBidderTest.java
@@ -23,6 +23,7 @@
 import org.prebid.server.bidder.model.HttpRequest;
 import org.prebid.server.bidder.model.HttpResponse;
 import org.prebid.server.bidder.model.Result;
+import org.prebid.server.bidder.openx.proto.OpenxBidExt;
 import org.prebid.server.bidder.openx.proto.OpenxBidResponse;
 import org.prebid.server.bidder.openx.proto.OpenxBidResponseExt;
 import org.prebid.server.bidder.openx.proto.OpenxRequestExt;
@@ -983,6 +984,155 @@ public void makeBidsShouldReturnResultContainingEmptyValueAndErrorsWhenSeatBidEm
                 .containsOnly(Collections.emptyList(), Collections.emptyList());
     }
 
+    @Test
+    public void makeBidShouldReturnBidWithExtPrebidMetaContainingAllFieldsFromBidExt() throws JsonProcessingException {
+        // given
+        final ObjectNode bidExt = mapper.valueToTree(OpenxBidExt.builder()
+                .dspId("1")
+                .buyerId("2")
+                .brandId("3")
+                .build());
+        final BidderCall<BidRequest> httpCall = givenHttpCall(mapper.writeValueAsString(
+                BidResponse.builder()
+                        .seatbid(singletonList(SeatBid.builder()
+                                .bid(List.of(
+                                        Bid.builder()
+                                                .w(200)
+                                                .h(150)
+                                                .price(BigDecimal.ONE)
+                                                .impid("impId1")
+                                                .dealid("dealid")
+                                                .adm("<div>This is an Ad</div>")
+                                                .ext(bidExt)
+                                                .build()))
+                                .build()))
+                        .build()));
+
+        final BidRequest bidRequest = BidRequest.builder()
+                .id("bidRequestId")
+                .imp(List.of(
+                        Imp.builder()
+                                .id("impId1")
+                                .banner(Banner.builder().build())
+                                .build()))
+                .build();
+
+        // when
+        final CompositeBidderResponse result = target.makeBidderResponse(httpCall, bidRequest);
+
+        // then
+        final ObjectNode expectedExtWithBidMeta = mapper.createObjectNode()
+                .put("dsp_id", "1")
+                .put("buyer_id", "2")
+                .put("brand_id", "3")
+                .set("prebid", mapper.createObjectNode()
+                        .set("meta", mapper.createObjectNode()
+                                .put("advertiserId", 2)
+                                .put("brandId", 3)
+                                .put("networkId", 1)));
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getBids()).hasSize(1)
+                .extracting(BidderBid::getBid)
+                .extracting(Bid::getExt)
+                .containsExactly(expectedExtWithBidMeta);
+    }
+
+    @Test
+    public void makeBidShouldReturnBidWithExtPrebidMetaContainingBrandIdFieldOnly() throws JsonProcessingException {
+        // given
+        final ObjectNode bidExt = mapper.valueToTree(OpenxBidExt.builder()
+                .brandId("4")
+                .build());
+        final BidderCall<BidRequest> httpCall = givenHttpCall(mapper.writeValueAsString(
+                BidResponse.builder()
+                        .seatbid(singletonList(SeatBid.builder()
+                                .bid(List.of(
+                                        Bid.builder()
+                                                .w(200)
+                                                .h(150)
+                                                .price(BigDecimal.ONE)
+                                                .impid("impId1")
+                                                .dealid("dealid")
+                                                .adm("<div>This is an Ad</div>")
+                                                .ext(bidExt)
+                                                .build()))
+                                .build()))
+                        .build()));
+
+        final BidRequest bidRequest = BidRequest.builder()
+                .id("bidRequestId")
+                .imp(List.of(
+                        Imp.builder()
+                                .id("impId1")
+                                .banner(Banner.builder().build())
+                                .build()))
+                .build();
+
+        // when
+        final CompositeBidderResponse result = target.makeBidderResponse(httpCall, bidRequest);
+
+        // then
+        final ObjectNode expectedExtWithBidMeta = mapper.createObjectNode()
+                .put("brand_id", "4")
+                .set("prebid", mapper.createObjectNode()
+                        .set("meta", mapper.createObjectNode()
+                                .put("brandId", 4)));
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getBids()).hasSize(1)
+                .extracting(BidderBid::getBid)
+                .extracting(Bid::getExt)
+                .containsExactly(expectedExtWithBidMeta);
+    }
+
+    @Test
+    public void makeBidShouldReturnBidWithExtPrebidMetaNotContainingFieldsWithInvalidValues()
+            throws JsonProcessingException {
+        // given
+        final ObjectNode bidExt = mapper.valueToTree(OpenxBidExt.builder()
+                .dspId("abc")
+                .buyerId("xyz")
+                .brandId("cba")
+                .build());
+        final BidderCall<BidRequest> httpCall = givenHttpCall(mapper.writeValueAsString(
+                BidResponse.builder()
+                        .seatbid(singletonList(SeatBid.builder()
+                                .bid(List.of(
+                                        Bid.builder()
+                                                .w(200)
+                                                .h(150)
+                                                .price(BigDecimal.ONE)
+                                                .impid("impId1")
+                                                .dealid("dealid")
+                                                .adm("<div>This is an Ad</div>")
+                                                .ext(bidExt)
+                                                .build()))
+                                .build()))
+                        .build()));
+
+        final BidRequest bidRequest = BidRequest.builder()
+                .id("bidRequestId")
+                .imp(List.of(
+                        Imp.builder()
+                                .id("impId1")
+                                .banner(Banner.builder().build())
+                                .build()))
+                .build();
+
+        // when
+        final CompositeBidderResponse result = target.makeBidderResponse(httpCall, bidRequest);
+
+        // then
+        final ObjectNode expectedExtWithBidMeta = mapper.createObjectNode()
+                .put("dsp_id", "abc")
+                .put("buyer_id", "xyz")
+                .put("brand_id", "cba");
+        assertThat(result.getErrors()).isEmpty();
+        assertThat(result.getBids()).hasSize(1)
+                .extracting(BidderBid::getBid)
+                .extracting(Bid::getExt)
+                .containsExactly(expectedExtWithBidMeta);
+    }
+
     private static Map<String, JsonNode> givenCustomParams(String key, Object values) {
         return singletonMap(key, mapper.valueToTree(values));
     }