diff --git a/src/Val.h b/src/Val.h
index e5055beec2..6e2f4d7b60 100644
--- a/src/Val.h
+++ b/src/Val.h
@@ -1310,11 +1310,15 @@ public:
         return cast_intrusive<T>(GetField(field));
     }
 
+    // Returns true if the slot for the given field is initialized.
+    // This helper can be used to guard GetFieldAs() accesses.
+    bool HasRawField(int field) const { return record_val[field].has_value(); }
+
     // The following return the given field converted to a particular
     // underlying value.  We provide these to enable efficient
     // access to record fields (without requiring an intermediary Val).
     // It is up to the caller to ensure that the field exists in the
-    // record (using HasField(), if necessary).
+    // record (using HasRawField(), if necessary).
     template<typename T, typename std::enable_if_t<is_zeek_val_v<T>, bool> = true>
     auto GetFieldAs(int field) const -> std::invoke_result_t<decltype(&T::Get), T> {
         if constexpr ( std::is_same_v<T, BoolVal> || std::is_same_v<T, IntVal> || std::is_same_v<T, EnumVal> )
diff --git a/src/file_analysis/File.cc b/src/file_analysis/File.cc
index 9bb69efeb8..73d98fdbd9 100644
--- a/src/file_analysis/File.cc
+++ b/src/file_analysis/File.cc
@@ -86,6 +86,9 @@ File::File(const std::string& file_id, const std::string& source_name, Connectio
       reassembly_enabled(false),
       postpone_timeout(false),
       done(false),
+      seen_bytes(0),
+      missing_bytes(0),
+      overflow_bytes(0),
       analyzers(this) {
     StaticInit();
 
@@ -147,6 +150,9 @@ void File::RaiseFileOverNewConnection(Connection* conn, bool is_orig) {
 }
 
 uint64_t File::LookupFieldDefaultCount(int idx) const {
+    if ( val->HasRawField(idx) )
+        return val->GetFieldAs<zeek::CountVal>(idx);
+
     auto v = val->GetFieldOrDefault(idx);
     return v->AsCount();
 }
@@ -192,23 +198,19 @@ bool File::SetExtractionLimit(RecordValPtr args, uint64_t bytes) {
     return true;
 }
 
-void File::IncrementByteCount(uint64_t size, int field_idx) {
-    uint64_t old = LookupFieldDefaultCount(field_idx);
-    val->Assign(field_idx, old + size);
-}
-
 void File::SetTotalBytes(uint64_t size) {
     DBG_LOG(DBG_FILE_ANALYSIS, "[%s] Total bytes %" PRIu64, id.c_str(), size);
     val->Assign(total_bytes_idx, size);
 }
 
 bool File::IsComplete() const {
-    const auto& total = val->GetField(total_bytes_idx);
-
-    if ( ! total )
+    // If total_bytes hasn't been initialized yet, file is certainly not complete.
+    if ( ! val->HasRawField(total_bytes_idx) )
         return false;
 
-    if ( stream_offset >= total->AsCount() )
+    auto total = val->GetFieldAs<zeek::CountVal>(total_bytes_idx);
+
+    if ( stream_offset >= total )
         return true;
 
     return false;
@@ -372,7 +374,7 @@ void File::DeliverStream(const u_char* data, uint64_t len) {
     }
 
     stream_offset += len;
-    IncrementByteCount(len, seen_bytes_idx);
+    seen_bytes += len;
 }
 
 void File::DeliverChunk(const u_char* data, uint64_t len, uint64_t offset) {
@@ -388,7 +390,7 @@ void File::DeliverChunk(const u_char* data, uint64_t len, uint64_t offset) {
         if ( reassembly_max_buffer > 0 && reassembly_max_buffer < file_reassembler->TotalSize() ) {
             uint64_t current_offset = stream_offset;
             uint64_t gap_bytes = file_reassembler->Flush();
-            IncrementByteCount(gap_bytes, overflow_bytes_idx);
+            overflow_bytes += gap_bytes;
 
             if ( FileEventAvailable(file_reassembly_overflow) ) {
                 FileEvent(file_reassembly_overflow, {val, val_mgr->Count(current_offset), val_mgr->Count(gap_bytes)});
@@ -411,7 +413,7 @@ void File::DeliverChunk(const u_char* data, uint64_t len, uint64_t offset) {
     }
     else {
         // We can't reassemble so we throw out the data for streaming.
-        IncrementByteCount(len, overflow_bytes_idx);
+        overflow_bytes += len;
     }
 
     DBG_LOG(DBG_FILE_ANALYSIS, "[%s] %" PRIu64 " chunk bytes in at offset %" PRIu64 "; %s [%s%s]", id.c_str(), len,
@@ -513,7 +515,7 @@ void File::Gap(uint64_t offset, uint64_t len) {
     analyzers.DrainModifications();
 
     stream_offset += len;
-    IncrementByteCount(len, missing_bytes_idx);
+    missing_bytes += len;
 }
 
 bool File::FileEventAvailable(EventHandlerPtr h) { return h && ! file_mgr->IsIgnored(id); }
@@ -526,6 +528,9 @@ void File::FileEvent(EventHandlerPtr h) {
 }
 
 void File::FileEvent(EventHandlerPtr h, Args args) {
+    val->Assign(seen_bytes_idx, seen_bytes);
+    val->Assign(missing_bytes_idx, missing_bytes);
+    val->Assign(overflow_bytes_idx, overflow_bytes);
     event_mgr.Enqueue(h, std::move(args));
 
     if ( h == file_new || h == file_over_new_connection || h == file_sniff || h == file_timeout ||
diff --git a/src/file_analysis/File.h b/src/file_analysis/File.h
index caaef35ae9..96096555dd 100644
--- a/src/file_analysis/File.h
+++ b/src/file_analysis/File.h
@@ -325,6 +325,9 @@ protected:
     bool reassembly_enabled;             /**< Whether file stream reassembly is needed. */
     bool postpone_timeout;               /**< Whether postponing timeout is requested. */
     bool done;                           /**< If this object is about to be deleted. */
+    uint64_t seen_bytes;                 /**< Number of bytes processed for this file. */
+    uint64_t missing_bytes;              /**< Number of bytes missed for this file. */
+    uint64_t overflow_bytes;             /**< Number of bytes not delivered. */
     detail::AnalyzerSet analyzers;       /**< A set of attached file analyzers. */
     std::list<Analyzer*> done_analyzers; /**< Analyzers we're done with, remembered here until they
                                             can be safely deleted. */