diff --git a/src/registrar/admin.py b/src/registrar/admin.py
index 4f2d2bbe0..53d397667 100644
--- a/src/registrar/admin.py
+++ b/src/registrar/admin.py
@@ -1017,7 +1017,7 @@ class ContactAdmin(ListHeaderAdmin, ImportExportModelAdmin):
         return super().changelist_view(request, extra_context=extra_context)
 
 
-class SeniorOfficialAdmin(ListHeaderAdmin, ImportExportModelAdmin):
+class SeniorOfficialAdmin(ListHeaderAdmin):
     """Custom Senior Official Admin class."""
 
     # NOTE: these are just placeholders.  Not part of ACs (haven't been defined yet).  Update in future tickets.
@@ -1031,13 +1031,6 @@ class SeniorOfficialAdmin(ListHeaderAdmin, ImportExportModelAdmin):
     # in autocomplete_fields for user
     ordering = ["first_name", "last_name"]
 
-    fieldsets = [
-        (
-            None,
-            {"fields": ["first_name", "last_name", "title", "phone"]},
-        )
-    ]
-
 
 class WebsiteResource(resources.ModelResource):
     """defines how each field in the referenced model should be mapped to the corresponding fields in the
diff --git a/src/registrar/migrations/0105_seniorofficial_portfolio_senior_official.py b/src/registrar/migrations/0105_seniorofficial_portfolio_senior_official.py
index 76cc6c0cb..1937039dd 100644
--- a/src/registrar/migrations/0105_seniorofficial_portfolio_senior_official.py
+++ b/src/registrar/migrations/0105_seniorofficial_portfolio_senior_official.py
@@ -1,9 +1,8 @@
-# Generated by Django 4.2.10 on 2024-06-20 21:16
+# Generated by Django 4.2.10 on 2024-06-21 19:26
 
 from django.db import migrations, models
 import django.db.models.deletion
 import phonenumber_field.modelfields
-import registrar.models.federal_agency
 
 
 class Migration(migrations.Migration):
@@ -27,13 +26,17 @@ class Migration(migrations.Migration):
                     phonenumber_field.modelfields.PhoneNumberField(blank=True, max_length=128, null=True, region=None),
                 ),
             ],
+            options={
+                "abstract": False,
+            },
         ),
         migrations.AddField(
             model_name="portfolio",
             name="senior_official",
             field=models.ForeignKey(
-                default=registrar.models.federal_agency.FederalAgency.get_non_federal_agency,
+                blank=True,
                 help_text="Associated senior official",
+                null=True,
                 on_delete=django.db.models.deletion.PROTECT,
                 to="registrar.seniorofficial",
             ),
diff --git a/src/registrar/models/portfolio.py b/src/registrar/models/portfolio.py
index d48baa601..b189ccded 100644
--- a/src/registrar/models/portfolio.py
+++ b/src/registrar/models/portfolio.py
@@ -43,7 +43,8 @@ class Portfolio(TimeStampedModel):
         on_delete=models.PROTECT,
         help_text="Associated senior official",
         unique=False,
-        default=FederalAgency.get_non_federal_agency,
+        null=True,
+        blank=True
     )
 
     organization_type = models.CharField(
diff --git a/src/registrar/models/senior_official.py b/src/registrar/models/senior_official.py
index 001dee579..cbe19d873 100644
--- a/src/registrar/models/senior_official.py
+++ b/src/registrar/models/senior_official.py
@@ -11,16 +11,6 @@ class SeniorOfficial(TimeStampedModel):
     managing Portfolios.
     """
 
-    class Meta:
-        """Contains meta information about this class"""
-
-        # Placeholder for later tickets...
-        # indexes = [
-        #     models.Index(fields=["user"]),
-        #     models.Index(fields=["email"]),
-        # ]
-
-
     first_name = models.CharField(
         null=False,
         blank=False,