diff --git a/endpoints/openrtb2/ctv/util/util.go b/endpoints/openrtb2/ctv/util/util.go
index 32cb8d29e27..d80c89300cf 100644
--- a/endpoints/openrtb2/ctv/util/util.go
+++ b/endpoints/openrtb2/ctv/util/util.go
@@ -8,6 +8,9 @@ import (
 	"strings"
 	"time"
 
+	"github.com/PubMatic-OpenWrap/openrtb"
+	"github.com/buger/jsonparser"
+
 	"github.com/PubMatic-OpenWrap/prebid-server/endpoints/openrtb2/ctv/constant"
 	"github.com/PubMatic-OpenWrap/prebid-server/endpoints/openrtb2/ctv/types"
 	"github.com/PubMatic-OpenWrap/prebid-server/openrtb_ext"
@@ -85,3 +88,12 @@ func TimeTrack(start time.Time, name string) {
 	Logf("[TIMETRACK] %s took %s", name, elapsed)
 	//eg: defer TimeTrack(time.Now(), "factorial")
 }
+
+// GetTargeting returns the value of targeting key associated with bidder
+// it is expected that bid.Ext contains prebid.targeting map
+// if value not present or any error occured empty value will be returned
+// along with error.
+func GetTargeting(key openrtb_ext.TargetingKey, bidder openrtb_ext.BidderName, bid openrtb.Bid) (string, error) {
+	bidderSpecificKey := key.BidderKey(openrtb_ext.BidderName(bidder), 20)
+	return jsonparser.GetString(bid.Ext, "prebid", "targeting", bidderSpecificKey)
+}
diff --git a/endpoints/openrtb2/ctv/util/util_test.go b/endpoints/openrtb2/ctv/util/util_test.go
index fd1f8d1d68a..0f49b04f6bb 100644
--- a/endpoints/openrtb2/ctv/util/util_test.go
+++ b/endpoints/openrtb2/ctv/util/util_test.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"testing"
 
+	"github.com/PubMatic-OpenWrap/prebid-server/openrtb_ext"
+
 	"github.com/PubMatic-OpenWrap/openrtb"
 
 	"github.com/PubMatic-OpenWrap/prebid-server/endpoints/openrtb2/ctv/types"
@@ -174,3 +176,31 @@ func TestSortByDealPriority(t *testing.T) {
 		fmt.Println("")
 	}
 }
+
+func TestGetTargeting(t *testing.T) {
+	var tests = []struct {
+		scenario    string // Testcase scenario
+		targeting   string
+		bidder      string
+		key         openrtb_ext.TargetingKey
+		expectValue string
+		expectError bool
+	}{
+		{"no hb_bidder, expect error", "", "", openrtb_ext.HbCategoryDurationKey, "", true},
+		{"hb_bidder present, no key present", `{"x" : "y"}`, "appnexus", openrtb_ext.HbCategoryDurationKey, "", true},
+		{"hb_bidder present, required key present (of length 20)", `{"x" : "y", "hb_pb_cat_dur_appnex" : "5.00_sports_10s"}`, "appnexus", openrtb_ext.HbCategoryDurationKey, "5.00_sports_10s", false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.scenario, func(t *testing.T) {
+			bid := new(openrtb.Bid)
+			bid.Ext = []byte(`{"prebid" : { "targeting" : ` + test.targeting + `}}`)
+			value, err := GetTargeting(test.key, openrtb_ext.BidderName(test.bidder), *bid)
+			if test.expectError {
+				assert.NotNil(t, err)
+				assert.Empty(t, value)
+			}
+			assert.Equal(t, test.expectValue, value)
+		})
+	}
+}
diff --git a/endpoints/openrtb2/ctv_auction.go b/endpoints/openrtb2/ctv_auction.go
index b1d95d09c7f..1a0528c5580 100644
--- a/endpoints/openrtb2/ctv_auction.go
+++ b/endpoints/openrtb2/ctv_auction.go
@@ -532,6 +532,18 @@ func (deps *ctvEndpointDeps) getBids(resp *openrtb.BidResponse) {
 				continue
 			}
 
+			value, err := util.GetTargeting(openrtb_ext.HbCategoryDurationKey, openrtb_ext.BidderName(seat.Seat), *bid)
+			if nil == err {
+				// ignore error
+				addTargetingKey(bid, openrtb_ext.HbCategoryDurationKey, value)
+			}
+
+			value, err = util.GetTargeting(openrtb_ext.HbpbConstantKey, openrtb_ext.BidderName(seat.Seat), *bid)
+			if nil == err {
+				// ignore error
+				addTargetingKey(bid, openrtb_ext.HbpbConstantKey, value)
+			}
+
 			index := deps.impIndices[originalImpID]
 			if len(deps.impData[index].Config) == 0 {
 				//adding pure video bids
@@ -852,3 +864,15 @@ func getAdPodBidExtension(adpod *types.AdPodBid) json.RawMessage {
 	rawExt, _ := json.Marshal(bidExt)
 	return rawExt
 }
+
+func addTargetingKey(bid *openrtb.Bid, key openrtb_ext.TargetingKey, value string) error {
+	if nil == bid {
+		return errors.New("Invalid bid")
+	}
+
+	raw, err := jsonparser.Set(bid.Ext, []byte(strconv.Quote(value)), "prebid", "targeting", string(key))
+	if nil == err {
+		bid.Ext = raw
+	}
+	return err
+}
diff --git a/endpoints/openrtb2/ctv_auction_test.go b/endpoints/openrtb2/ctv_auction_test.go
new file mode 100644
index 00000000000..f5f8abc0999
--- /dev/null
+++ b/endpoints/openrtb2/ctv_auction_test.go
@@ -0,0 +1,35 @@
+package openrtb2
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/PubMatic-OpenWrap/openrtb"
+	"github.com/PubMatic-OpenWrap/prebid-server/openrtb_ext"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAddTargetingKeys(t *testing.T) {
+	var tests = []struct {
+		scenario string // Testcase scenario
+		key      string
+		value    string
+		bidExt   string
+		expect   map[string]string
+	}{
+		{scenario: "key_not_exists", key: "hb_pb_cat_dur", value: "some_value", bidExt: `{"prebid":{"targeting":{}}}`, expect: map[string]string{"hb_pb_cat_dur": "some_value"}},
+		{scenario: "key_already_exists", key: "hb_pb_cat_dur", value: "new_value", bidExt: `{"prebid":{"targeting":{"hb_pb_cat_dur":"old_value"}}}`, expect: map[string]string{"hb_pb_cat_dur": "new_value"}},
+	}
+	for _, test := range tests {
+		t.Run(test.scenario, func(t *testing.T) {
+			bid := new(openrtb.Bid)
+			bid.Ext = []byte(test.bidExt)
+			key := openrtb_ext.TargetingKey(test.key)
+			assert.Nil(t, addTargetingKey(bid, key, test.value))
+			extBid := openrtb_ext.ExtBid{}
+			json.Unmarshal(bid.Ext, &extBid)
+			assert.Equal(t, test.expect, extBid.Prebid.Targeting)
+		})
+	}
+	assert.Equal(t, "Invalid bid", addTargetingKey(nil, openrtb_ext.HbCategoryDurationKey, "some value").Error())
+}