diff --git a/sei-tendermint/internal/mempool/metrics.go b/sei-tendermint/internal/mempool/metrics.go
index d313e746ec..d55e09131b 100644
--- a/sei-tendermint/internal/mempool/metrics.go
+++ b/sei-tendermint/internal/mempool/metrics.go
@@ -1,6 +1,7 @@
 package mempool
 
 import (
+	"context"
 	"math"
 	"strconv"
 
@@ -27,6 +28,7 @@ var (
 	otelMetrics = struct {
 		compactTotal           metric.Int64Counter
 		compactDurationSeconds metric.Float64Histogram
+		pendingNonce           metric.Int64Counter
 	}{
 		compactTotal: utils.OrPanic1(mempoolMeter.Int64Counter(
 			"tendermint_mempool_compact_total",
@@ -38,13 +40,39 @@ var (
 			metric.WithUnit("s"),
 			metric.WithExplicitBucketBoundaries(prometheus.ExponentialBucketsRange(0.001, 30, 14)...),
 		)),
+		pendingNonce: utils.OrPanic1(mempoolMeter.Int64Counter(
+			"tendermint_mempool_pending_nonce",
+			metric.WithDescription("EVM pending nonce events by type (added, expired, rejected, accepted)"),
+			metric.WithUnit("{count}"),
+		)),
 	}
 
+	pendingNonceEventAdded    = metric.WithAttributes(attribute.String("event", "added"))
+	pendingNonceEventExpired  = metric.WithAttributes(attribute.String("event", "expired"))
+	pendingNonceEventRejected = metric.WithAttributes(attribute.String("event", "rejected"))
+	pendingNonceEventAccepted = metric.WithAttributes(attribute.String("event", "accepted"))
+
 	triggerInsertOverflowAttr = metric.WithAttributes(attribute.String("trigger", "insert_overflow"))
 	triggerUpdateAttr         = metric.WithAttributes(attribute.String("trigger", "update"))
 	triggerReapAttr           = metric.WithAttributes(attribute.String("trigger", "reap"))
 )
 
+func recordPendingNonceAdded() {
+	otelMetrics.pendingNonce.Add(context.Background(), 1, pendingNonceEventAdded)
+}
+
+func recordPendingNonceExpired() {
+	otelMetrics.pendingNonce.Add(context.Background(), 1, pendingNonceEventExpired)
+}
+
+func recordPendingNonceRejected() {
+	otelMetrics.pendingNonce.Add(context.Background(), 1, pendingNonceEventRejected)
+}
+
+func recordPendingNonceAccepted() {
+	otelMetrics.pendingNonce.Add(context.Background(), 1, pendingNonceEventAccepted)
+}
+
 //go:generate go run ../../scripts/metricsgen -struct=Metrics
 
 // Metrics contains metrics exposed by this package.
diff --git a/sei-tendermint/internal/mempool/tx.go b/sei-tendermint/internal/mempool/tx.go
index 5a728bde6e..7b53d436ba 100644
--- a/sei-tendermint/internal/mempool/tx.go
+++ b/sei-tendermint/internal/mempool/tx.go
@@ -353,7 +353,7 @@ func (inner *txStoreInner) shouldReject(txHash types.TxHash) bool {
 	return false
 }
 
-func (s *txStore) insert(inner *txStoreInner, wtx *WrappedTx) error {
+func (s *txStore) insert(inner *txStoreInner, wtx *WrappedTx, recordAdded bool) error {
 	if _, ok := inner.byHash[wtx.Hash()]; ok {
 		return errDuplicateTx
 	}
@@ -371,8 +371,11 @@ func (s *txStore) insert(inner *txStoreInner, wtx *WrappedTx) error {
 		// Reject transactions with old nonces.
 		if evm.nonce < account.firstNonce {
 			inner.cache.Push(wtx.Hash(), utils.None[cacheEvm]())
+			recordPendingNonceRejected()
 			return errOldNonce
 		}
+		insertedAtNextNonce := evm.nonce == account.nextNonce
+		newTx := wtx
 		inner.cache.Push(wtx.Hash(), utils.Some(cacheEvm{
 			priority:        wtx.priority,
 			address:         evm.address,
@@ -429,6 +432,9 @@ func (s *txStore) insert(inner *txStoreInner, wtx *WrappedTx) error {
 			if !wtx.readyEl.IsPresent() {
 				s.priorityReservoir.Add(wtx.priority)
 				wtx.readyEl = utils.Some(s.readyTxs.PushBack(wtx.Tx()))
+				if !recordAdded || wtx != newTx || !insertedAtNextNonce {
+					recordPendingNonceAccepted()
+				}
 			}
 		}
 	} else {
@@ -442,6 +448,9 @@ func (s *txStore) insert(inner *txStoreInner, wtx *WrappedTx) error {
 	}
 	inner.byHash[wtx.Hash()] = wtx
 	inner.state.Store(state)
+	if recordAdded && wtx.evm.IsPresent() {
+		recordPendingNonceAdded()
+	}
 	return nil
 }
 
@@ -501,7 +510,7 @@ func (inner *txStoreInner) inInclusionOrder() []*WrappedTx {
 // txStore takes ownership of wtx.
 func (s *txStore) Insert(wtx *WrappedTx) error {
 	for inner := range s.inner.Lock() {
-		if err := s.insert(inner, wtx); err != nil {
+		if err := s.insert(inner, wtx, true); err != nil {
 			return err
 		}
 		if total := inner.state.Load().total; !total.LessEqual(&inner.hardLimit) {
@@ -538,7 +547,7 @@ func (s *txStore) compact(inner *txStoreInner, clearAccounts bool) {
 		total.Inc(wtx.Size())
 		limitOk := total.LessEqual(&inner.softLimit)
 		// NOTE: insertion is lazily evaluated here.
-		if !limitOk || s.insert(inner, wtx) != nil {
+		if !limitOk || s.insert(inner, wtx, false) != nil {
 			Global.RemovedTxsAt().Add(1)
 			Global.EvictedTxsAt().Add(1)
 			if el, ok := wtx.readyEl.Get(); ok {
@@ -594,8 +603,12 @@ func (s *txStore) Update(spec updateSpec) {
 			}
 			invalid := spec.InvalidTxs[wtx.Hash()] || wtx.check(spec.Constraints) != nil
 			_, executed := spec.TxResults[wtx.Hash()]
-			remove := invalid || executed || (expired && (s.config.RemoveExpiredTxsFromQueue || !inner.isReady(wtx)))
+			removedByExpiry := expired && (s.config.RemoveExpiredTxsFromQueue || !inner.isReady(wtx))
+			remove := invalid || executed || removedByExpiry
 			if remove {
+				if removedByExpiry && wtx.evm.IsPresent() {
+					recordPendingNonceExpired()
+				}
 				// KeepInvalidTxsInCache decides whether we invalidate txs removed from mempool for any reason.
 				// Executed txs invalidation was handled earlier.
 				if s.config.KeepInvalidTxsInCache && !executed {
diff --git a/x/evm/ante/metrics.go b/x/evm/ante/metrics.go
index 8c08336236..3b62e025f4 100644
--- a/x/evm/ante/metrics.go
+++ b/x/evm/ante/metrics.go
@@ -17,7 +17,6 @@ var (
 	}
 
 	evmAnteMetrics = struct {
-		pendingNonce  metric.Int64Counter
 		nonceMismatch metric.Int64Counter
 
 		// Gas price histogram
@@ -26,12 +25,6 @@ var (
 		// Association errors
 		associationError metric.Int64Counter
 	}{
-		pendingNonce: must(meter.Int64Counter(
-			"evm_pending_nonce",
-			metric.WithDescription("EVM pending nonce events by type (added, expired, rejected, accepted)"),
-			metric.WithUnit("{count}"),
-		)),
-
 		nonceMismatch: must(meter.Int64Counter(
 			"evm_nonce_mismatch",
 			metric.WithDescription("EVM nonce mismatches by cause (too_high, too_low)"),