diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71061e8d2..2cd8400ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added the Username onboarding screen. Currently behind the “New Onboarding Flow” feature flag. [#1598](https://github.com/planetary-social/nos/issues/1598)
 - Added the Account Success onboarding screen. Currently behind the “New Onboarding Flow” feature flag. [#1599](https://github.com/planetary-social/nos/issues/1599)
 - Updated the Age Verification onboarding screen. Currently behind the “New Onboarding Flow” feature flag. [#1651](https://github.com/planetary-social/nos/issues/1651)
+- Track opening mentions with Posthog. [#1480](https://github.com/planetary-social/nos/issues/1480)
 
 ## [0.2.2] - 2024-10-11Z
 
diff --git a/Nos/Controller/NoteEditorController.swift b/Nos/Controller/NoteEditorController.swift
index a6b9182f3..811200980 100644
--- a/Nos/Controller/NoteEditorController.swift
+++ b/Nos/Controller/NoteEditorController.swift
@@ -1,3 +1,4 @@
+import Dependencies
 import Foundation
 import SwiftUI
 import UIKit
@@ -9,6 +10,8 @@ import UIKit
 /// when the user indicates they are ready to post it.  
 @Observable class NoteEditorController: NSObject, UITextViewDelegate {
 
+    @ObservationIgnored @Dependency(\.analytics) private var analytics
+
     /// The height that fits all entered text. This value will be updated by `NoteUITextViewRepresentable` 
     /// automatically, and should be used to set the frame of `NoteUITextViewRepresentable` from SwiftUI. This is done 
     /// to work around some incompatibilities between UIKit and SwiftUI where the UITextView won't expand properly.
@@ -16,8 +19,14 @@ import UIKit
     
     /// A variable that controls whether the mention autocomplete window should be shown. This window is triggered
     /// by typing an '@' symbol and allows the user to search for another user to mention in their note.
-    var showMentionsAutocomplete = false
-    
+    var showMentionsAutocomplete = false {
+        didSet {
+            if showMentionsAutocomplete {
+                analytics.mentionsAutocompleteOpened()
+            }
+        }
+    }
+
     /// The view the user will use for editing. Should only be set by ``NoteTextEditor/NoteUITextViewRepresentable``.
     var textView: UITextView? {
         didSet {
diff --git a/Nos/Controller/SearchController.swift b/Nos/Controller/SearchController.swift
index 1c84b6d79..f06507bb6 100644
--- a/Nos/Controller/SearchController.swift
+++ b/Nos/Controller/SearchController.swift
@@ -87,7 +87,7 @@ class SearchController: ObservableObject {
                     case .discover:
                         analytics.searchedDiscover()
                     case .mentions:
-                        analytics.searchedMentions()
+                        analytics.mentionsAutocompleteCharactersEntered()
                     }
                 }
                 self.authorResults = self.authors(named: query)
diff --git a/Nos/Service/Analytics.swift b/Nos/Service/Analytics.swift
index 320350e15..945396d5e 100644
--- a/Nos/Service/Analytics.swift
+++ b/Nos/Service/Analytics.swift
@@ -161,8 +161,8 @@ class Analytics {
     }
 
     /// Tracks when the user submits a search on the Mentions screen.
-    func searchedMentions() {
-        track("Mentions Search Started")
+    func mentionsAutocompleteCharactersEntered() {
+        track("Mentions Autocomplete Characters Entered")
     }
 
     /// Tracks when the user taps on a search result on the Discover screen.
@@ -297,4 +297,8 @@ class Analytics {
     func cancelledUploadSourceSelection() {
         track("Cancelled Upload Source Selection")
     }
+
+    func mentionsAutocompleteOpened() {
+        track("Mentions Autocomplete Opened")
+    }
 }