diff --git a/adapters/bidder.go b/adapters/bidder.go
index fb0ec07e032..f7a588ea025 100644
--- a/adapters/bidder.go
+++ b/adapters/bidder.go
@@ -149,6 +149,7 @@ type ExtraRequestInfo struct {
 	GlobalPrivacyControlHeader string
 	CurrencyConversions        currency.Conversions
 	PreferredMediaType         openrtb_ext.BidType
+	PageViewId                 string
 }
 
 func NewExtraRequestInfo(c currency.Conversions) ExtraRequestInfo {
diff --git a/adapters/kobler/kobler.go b/adapters/kobler/kobler.go
index cb1a1acaa71..5f03ddaf1e8 100644
--- a/adapters/kobler/kobler.go
+++ b/adapters/kobler/kobler.go
@@ -1,6 +1,7 @@
 package kobler
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"slices"
@@ -33,6 +34,14 @@ func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server co
 	return bidder, nil
 }
 
+type RequestExt struct {
+	Kobler *KoblerRequestExt `json:"kobler,omitempty"`
+}
+
+type KoblerRequestExt struct {
+	PageViewId string `json:"page_view_id,omitempty"`
+}
+
 func (a adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
 	var requestData []*adapters.RequestData
 	var errors []error
@@ -45,6 +54,20 @@ func (a adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.Ex
 		sanitizedRequest.Cur = append(sanitizedRequest.Cur, supportedCurrency)
 	}
 
+	if reqInfo.PageViewId != "" {
+		var ext RequestExt
+		ext.Kobler = &KoblerRequestExt{
+			reqInfo.PageViewId,
+		}
+		jsonExt, err := json.Marshal(ext)
+		if err != nil {
+			errors = append(errors, err)
+			return nil, errors
+		}
+
+		sanitizedRequest.Ext = jsonExt
+	}
+
 	for i := range sanitizedRequest.Imp {
 		if err := convertImpCurrency(&sanitizedRequest.Imp[i], reqInfo); err != nil {
 			errors = append(errors, err)
diff --git a/exchange/exchange.go b/exchange/exchange.go
index 1915e7b2731..a37e963cac1 100644
--- a/exchange/exchange.go
+++ b/exchange/exchange.go
@@ -220,7 +220,7 @@ type AuctionRequest struct {
 	GDPREnforced            bool
 }
 
-// BidderRequest holds the bidder specific request and all other
+// BidderRequest holds the bidder-specific request and all other
 // information needed to process that bidder request.
 type BidderRequest struct {
 	BidRequest            *openrtb2.BidRequest
@@ -230,6 +230,7 @@ type BidderRequest struct {
 	BidderStoredResponses map[string]json.RawMessage
 	IsRequestAlias        bool
 	ImpReplaceImpId       map[string]bool
+	PageViewId            string
 }
 
 func (e *exchange) HoldAuction(ctx context.Context, r *AuctionRequest, debugLog *DebugLog) (*AuctionResponse, error) {
@@ -758,6 +759,7 @@ func (e *exchange) getAllBids(
 			reqInfo := adapters.NewExtraRequestInfo(conversions)
 			reqInfo.PbsEntryPoint = bidderRequest.BidderLabels.RType
 			reqInfo.GlobalPrivacyControlHeader = globalPrivacyControlHeader
+			reqInfo.PageViewId = bidderRequest.PageViewId
 
 			if len(liveAdaptersPreferredMediaType) > 0 {
 				if mtype, found := liveAdaptersPreferredMediaType[bidder.BidderName]; found {
diff --git a/exchange/utils.go b/exchange/utils.go
index 9659f19570b..3689bf6a483 100644
--- a/exchange/utils.go
+++ b/exchange/utils.go
@@ -56,6 +56,7 @@ type requestSplitter struct {
 //  1. BidRequest.Imp[].Ext will only contain the "prebid" field and a "bidder" field which has the params for the intended Bidder.
 //  2. Every BidRequest.Imp[] requested Bids from the Bidder who keys it.
 //  3. BidRequest.User.BuyerUID will be set to that Bidder's ID.
+//  4. BidRequest.Ext.PageViewId will be set to that Bidder's ID.
 func (rs *requestSplitter) cleanOpenRTBRequests(ctx context.Context,
 	auctionReq AuctionRequest,
 	requestExt *openrtb_ext.ExtRequest,
@@ -92,6 +93,18 @@ func (rs *requestSplitter) cleanOpenRTBRequests(ctx context.Context,
 		lowerCaseExplicitBuyerUIDs[lowerKey] = uid
 	}
 
+	pageViewIds, err := extractAndCleanPageViewIds(req)
+	if err != nil {
+		errs = []error{err}
+		return
+	}
+
+	lowerCasePageViewIds := make(map[string]string)
+	for bidder, pageViewId := range pageViewIds {
+		lowerKey := strings.ToLower(bidder)
+		lowerCasePageViewIds[lowerKey] = pageViewId
+	}
+
 	bidderParamsInReqExt, err := ExtractReqExtBidderParamsMap(req.BidRequest)
 	if err != nil {
 		errs = []error{err}
@@ -246,6 +259,8 @@ func (rs *requestSplitter) cleanOpenRTBRequests(ctx context.Context,
 			bidderLabels.AdapterBids = metrics.AdapterBidPresent
 		}
 
+		pageViewId := pageViewIds[strings.ToLower(bidder)]
+
 		bidderRequest := BidderRequest{
 			BidderName:            openrtb_ext.BidderName(bidder),
 			BidderCoreName:        coreBidder,
@@ -254,6 +269,7 @@ func (rs *requestSplitter) cleanOpenRTBRequests(ctx context.Context,
 			BidderStoredResponses: bidderImpWithBidResp[openrtb_ext.BidderName(bidder)],
 			ImpReplaceImpId:       auctionReq.BidderImpReplaceImpID[bidder],
 			BidderLabels:          bidderLabels,
+			PageViewId:            pageViewId,
 		}
 		bidderRequests = append(bidderRequests, bidderRequest)
 	}
@@ -638,6 +654,31 @@ func extractAndCleanBuyerUIDs(req *openrtb_ext.RequestWrapper) (map[string]strin
 	return buyerUIDs, nil
 }
 
+// extractAndCleanPageViewIds parses the values from ext.prebid.page_view_ids, and then deletes those values from the ext.
+// This prevents a Bidder from getting access to page view IDs of other Bidders.
+func extractAndCleanPageViewIds(req *openrtb_ext.RequestWrapper) (map[string]string, error) {
+	if req.Ext == nil {
+		return nil, nil
+	}
+
+	requestExt, err := req.GetRequestExt()
+	if err != nil {
+		return nil, err
+	}
+
+	prebid := requestExt.GetPrebid()
+	if prebid == nil {
+		return nil, nil
+	}
+
+	pageViewIds := prebid.PageViewIds
+
+	prebid.PageViewIds = nil
+	requestExt.SetPrebid(prebid)
+
+	return pageViewIds, nil
+}
+
 // splitImps takes a list of Imps and returns a map of imps which have been sanitized for each bidder.
 //
 // For example, suppose imps has two elements. One goes to rubicon, while the other goes to appnexus and index.
diff --git a/exchange/utils_test.go b/exchange/utils_test.go
index 317d7a640cd..a3ade1b99aa 100644
--- a/exchange/utils_test.go
+++ b/exchange/utils_test.go
@@ -3976,7 +3976,125 @@ func TestBuildExtData(t *testing.T) {
 	}
 }
 
-func TestCleanOpenRTBRequestsFilterBidderRequestExt(t *testing.T) {
+func TestCleanOpenRTBRequestsFilterBidderRequestExtForPageViewIds(t *testing.T) {
+	pageViewId1 := "a147eab5-9b1f-4fdc-b1f8-900a58c87a39"
+	pageViewId2 := "468dd24e-de62-4d2b-bdef-1daaea079e4c"
+	testCases := []struct {
+		desc            string
+		inExt           json.RawMessage
+		wantExt         []json.RawMessage
+		wantPageViewIds []string
+	}{
+		{
+			desc:            "Nil request ext, empty page view IDs",
+			inExt:           nil,
+			wantExt:         nil,
+			wantPageViewIds: []string{"", ""},
+		},
+		{
+			desc:            "Missing prebid in request ext, empty page view IDs",
+			inExt:           json.RawMessage(`{}`),
+			wantExt:         nil,
+			wantPageViewIds: []string{"", ""},
+		},
+		{
+			desc:            "Missing page_view_ids in prebid in request ext, empty page view IDs",
+			inExt:           json.RawMessage(`{"prebid": {}}`),
+			wantExt:         nil,
+			wantPageViewIds: []string{"", ""},
+		},
+		{
+			desc:  "Empty page_view_ids in prebid in request ext, empty page view IDs",
+			inExt: json.RawMessage(`{"prebid": {"page_view_ids":{}, "channel":{"name":"b","version":"c"}}}`),
+			wantExt: []json.RawMessage{
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+			},
+			wantPageViewIds: []string{"", ""},
+		},
+		{
+			desc: "Non-matching page_view_ids in prebid in request ext, empty page view IDs",
+			inExt: json.RawMessage(`{"prebid":{"page_view_ids":{
+					"some-bidder":"page-view-id-for-some-bidder",
+					"second-bidder":"page-view-id-for-second-bidder"
+			}}}`),
+			wantExt:         nil,
+			wantPageViewIds: []string{"", ""},
+		},
+		{
+			desc: "Matching page_view_ids in prebid in request ext, non-empty page view IDs",
+			inExt: json.RawMessage(`{"prebid": { "channel": { "name":"b", "version":"c" }, "page_view_ids": {
+					"some-bidder":"page-view-id-for-some-bidder",
+					"appnexus": "a147eab5-9b1f-4fdc-b1f8-900a58c87a39",
+					"pubmatic": "468dd24e-de62-4d2b-bdef-1daaea079e4c"
+			}}}`),
+			wantExt: []json.RawMessage{
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+			},
+			wantPageViewIds: []string{pageViewId1, pageViewId2},
+		},
+		{
+			desc: "One matching page_view_id in prebid in request ext, one non-empty page view ID",
+			inExt: json.RawMessage(`{ "prebid": { "channel": { "name":"b", "version":"c" }, "page_view_ids": {
+					"some-bidder":"page-view-id-for-some-bidder",
+					"appnexus": "a147eab5-9b1f-4fdc-b1f8-900a58c87a39"
+			}}}`),
+			wantExt: []json.RawMessage{
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+				json.RawMessage(`{"prebid":{"channel":{"name":"b","version":"c"}}}`),
+			},
+			wantPageViewIds: []string{pageViewId1, ""},
+		},
+	}
+
+	for _, test := range testCases {
+		req := newBidRequestWithBidderParams()
+		req.Ext = nil
+		var extRequest *openrtb_ext.ExtRequest
+		if test.inExt != nil {
+			req.Ext = test.inExt
+			extRequest = &openrtb_ext.ExtRequest{}
+			err := jsonutil.UnmarshalValid(req.Ext, extRequest)
+			assert.NoErrorf(t, err, test.desc+":Error unmarshaling inExt")
+		}
+
+		auctionReq := AuctionRequest{
+			BidRequestWrapper: &openrtb_ext.RequestWrapper{BidRequest: req},
+			UserSyncs:         &emptyUsersync{},
+			Account:           config.Account{},
+			TCF2Config:        gdpr.NewTCF2Config(config.TCF2{}, config.AccountGDPR{}),
+		}
+		gdprPermissionsBuilder := fakePermissionsBuilder{
+			permissions: &permissionsMock{
+				allowAllBidders: true,
+			},
+		}.Builder
+
+		reqSplitter := &requestSplitter{
+			bidderToSyncerKey: map[string]string{},
+			me:                &metrics.MetricsEngineMock{},
+			privacyConfig:     config.Privacy{},
+			gdprPermsBuilder:  gdprPermissionsBuilder,
+			hostSChainNode:    nil,
+			bidderInfo:        config.BidderInfos{},
+		}
+
+		bidderRequests, _, errs := reqSplitter.cleanOpenRTBRequests(context.Background(), auctionReq, extRequest, map[string]float64{})
+		assert.Equal(t, 0, len(errs), test.desc)
+		sort.Slice(bidderRequests, func(i, j int) bool {
+			return bidderRequests[i].BidderCoreName < bidderRequests[j].BidderCoreName
+		})
+		for i, wantBidderRequest := range test.wantExt {
+			assert.Equal(t, wantBidderRequest, bidderRequests[i].BidRequest.Ext, test.desc+" : "+string(bidderRequests[i].BidderCoreName)+"\n\t\tGotRequestExt : "+string(bidderRequests[i].BidRequest.Ext))
+		}
+		for i, wantPageViewId := range test.wantPageViewIds {
+			assert.Equal(t, wantPageViewId, bidderRequests[i].PageViewId, test.desc+" : "+string(bidderRequests[i].BidderCoreName)+"\n\t\tGotPageViewId : "+bidderRequests[i].PageViewId)
+		}
+	}
+}
+
+func TestCleanOpenRTBRequestsFilterBidderRequestExtForAlternateBidderCodes(t *testing.T) {
 	testCases := []struct {
 		desc      string
 		inExt     json.RawMessage
diff --git a/openrtb_ext/request.go b/openrtb_ext/request.go
index 7f8978e6eb7..a28187bcd5c 100644
--- a/openrtb_ext/request.go
+++ b/openrtb_ext/request.go
@@ -44,6 +44,7 @@ type ExtRequest struct {
 type ExtRequestPrebid struct {
 	AdServerTargeting    []AdServerTarget                `json:"adservertargeting,omitempty"`
 	Aliases              map[string]string               `json:"aliases,omitempty"`
+	PageViewIds          map[string]string               `json:"page_view_ids,omitempty"`
 	AliasGVLIDs          map[string]uint16               `json:"aliasgvlids,omitempty"`
 	Analytics            map[string]json.RawMessage      `json:"analytics,omitempty"`
 	BidAdjustmentFactors map[string]float64              `json:"bidadjustmentfactors,omitempty"`