diff --git a/app/models/organization.rb b/app/models/organization.rb
index 7b97fb755e..28c894ae03 100644
--- a/app/models/organization.rb
+++ b/app/models/organization.rb
@@ -84,7 +84,7 @@ def communications_email
   validates :organization_type_other, length: { maximum: 255 }
   validates :tax_id, length: { maximum: 255 }
   validates :website_url, length: { maximum: 255 }
-  validates :mission_vision_values, length: { maximum: 255 }
+  validates :mission_vision_values, length: { maximum: 16_000 }
   # Admin bypass stays on Current.user until #2833 moves it to a controller-set flag (models never call policies).
   validate :affiliation_dates_locked, if: -> { affiliations.any? && !Current.user&.super_user? }
   validate :parent_is_not_self_or_descendant, if: :parent_id_changed?
diff --git a/app/services/organization_services/import_orgs.rb b/app/services/organization_services/import_orgs.rb
new file mode 100644
index 0000000000..be3902324c
--- /dev/null
+++ b/app/services/organization_services/import_orgs.rb
@@ -0,0 +1,207 @@
+module OrganizationServices
+  class ImportOrgs
+    include FilemakerValues
+
+    OUTCOMES = %i[created linked_project already_imported skipped failed].freeze
+    BATCH_SIZE = 500
+    TYPE_PATTERNS = {
+      /501|non.?profit/i => "501c3/nonprofit",
+      /for.?profit|\bLLC\b/i => "For-profit",
+      /govt|government/i => "Government agency",
+      /\Aother\z/i => Organization::ORGANIZATION_TYPE_OTHER
+    }.freeze
+    SCHOOL_PATTERN = /school/i
+
+    attr_reader :results, :multi_org, :condensed, :suffixed, :retired,
+                :unmatched_statuses, :unmatched_types, :unmatched_project_codes
+
+    def unmatched_staff = @staff.unmatched
+
+    def initialize(progress: nil)
+      @progress = progress
+      @results = OUTCOMES.index_with { [] }
+      @multi_org = []
+      @condensed = []
+      @suffixed = []
+      @retired = []
+      @unmatched_statuses = Hash.new(0)
+      @unmatched_types = Hash.new(0)
+      @placed_by_org = Hash.new { |hash, key| hash[key] = [] }
+    end
+
+    def call
+      load_indexes
+      read = 0
+      FmOrganization.order(:fm_id).pluck(:id).each_slice(BATCH_SIZE) do |ids|
+        ActiveRecord::Base.transaction(requires_new: true) do
+          FmOrganization.where(id: ids).order(:fm_id).each { |row| import_row(row) }
+        end
+        read += ids.size
+        @progress&.call(read)
+      end
+      @unmatched_project_codes = project_codes.reject { |code| @codes.include?(code) }
+      @condensed = @placed_by_org.select { |_id, codes| codes.size > 1 }
+                                .map { |id, codes| "##{id} #{@org_by_id[id]&.name}: #{codes.join(', ')}" }
+      self
+    end
+
+    private
+
+    def load_indexes
+      @codes = Set.new
+      @holders = Hash.new { |hash, key| hash[key] = [] }
+      @org_by_id = {}
+      Organization.find_each do |organization|
+        @org_by_id[organization.id] = organization
+        organization.filemaker_codes.each do |code|
+          @codes << code
+          @holders[code] << organization
+        end
+      end
+      @projects_by_org = FmProject.all.group_by { |project| project.data["OrgID"].to_s }
+      @statuses = OrganizationStatus.all.index_by { |status| status.name.downcase }
+      @staff = StaffTranslation.new
+      @import_user_id = Setting.import_user&.id
+    end
+
+    def import_row(fm_organization)
+      data = fm_organization.data
+      code = fm_organization.fm_id
+      name = clip(data["OrgName"].to_s.squish)
+      return record(:skipped, "#{code}: no name") if name.blank?
+      return record(:already_imported, "#{code} #{name}") if @codes.include?(code)
+
+      note_retired(code, name)
+      projects = @projects_by_org[code] || []
+      targets = projects.flat_map { |project| @holders[project.fm_id] }.uniq
+      return attach_to_targets(code, name, targets) if targets.any?
+
+      create_org(code, name, data, projects)
+    end
+
+    def attach_to_targets(code, name, targets)
+      failed = targets.reject do |organization|
+        organization.filemaker_code = Organization.join_filemaker_codes(organization.filemaker_code, code)
+        organization.save
+      end
+      unless failed.empty?
+        return record(:failed, "#{code} #{name}: could not add the code to #{failed.map { |organization| "##{organization.id}" }.join(', ')}")
+      end
+
+      targets.each do |organization|
+        @codes << code
+        @holders[code] << organization unless @holders[code].include?(organization)
+        @placed_by_org[organization.id] << code
+      end
+      if targets.size > 1
+        @multi_org << "#{code} #{name} → #{targets.map { |organization| "##{organization.id} #{organization.name}" }.join('; ')}"
+      end
+      record(:linked_project, "#{code} #{name} → #{targets.map { |organization| "##{organization.id}" }.join(', ')}")
+    end
+
+    def create_org(code, name, data, projects)
+      organization = Organization.new(name: unique_name(name, code))
+      fill(organization, attributes(data))
+      apply_status(organization, data["Status"])
+      stamp(organization, data)
+      organization.filemaker_code = Organization.join_filemaker_codes(code, *claimable_project_codes(projects))
+      return failed(organization, "#{code} #{name}") unless organization.save
+
+      index(organization)
+      record(:created, "#{code} #{name} → ##{organization.id}")
+    end
+
+    def claimable_project_codes(projects)
+      projects.one? ? [ projects.first.fm_id ] : []
+    end
+
+    def attributes(data)
+      {
+        website_url: clip(data["Website"]),
+        description: data["Description"].to_s.strip.presence,
+        mission_vision_values: data["Mission"].to_s.strip.presence,
+        **organization_type(data["OrgType"]),
+        **archive_timestamps(data)
+      }
+    end
+
+    def archive_timestamps(data)
+      created = parse_date(data["CreationDate"])
+      { created_at: created, updated_at: parse_date(data["ModificationDateTime"]) || created }
+    end
+
+    def organization_type(value)
+      value = value.to_s.squish
+      return {} if value.blank?
+
+      school = value.match?(SCHOOL_PATTERN) ? { school: true } : {}
+      type = TYPE_PATTERNS.find { |pattern, _type| value.match?(pattern) }&.last
+      return school.merge(organization_type: type) if type
+
+      @unmatched_types[value] += 1
+      school.merge(organization_type: Organization::ORGANIZATION_TYPE_OTHER, organization_type_other: clip(value))
+    end
+
+    def apply_status(organization, value)
+      name = value.to_s.strip
+      return if name.blank?
+
+      status = @statuses[name.downcase]
+      if status.nil?
+        @unmatched_statuses[name] += 1
+        return
+      end
+
+      organization.organization_status = status
+    end
+
+    def fill(organization, attributes)
+      attributes.each do |attribute, value|
+        next if value.blank?
+        next if attribute == :organization_type_other && organization.organization_type != Organization::ORGANIZATION_TYPE_OTHER
+
+        organization[attribute] = value
+      end
+    end
+
+    def stamp(organization, data)
+      organization.created_by_id ||= @staff.user_id_for(data["CreatedBy"]) || @import_user_id
+      organization.updated_by_id ||= @staff.user_id_for(data["ModifiedBy"]) || @import_user_id
+    end
+
+    def unique_name(name, code)
+      return name unless Organization.exists?(name:)
+
+      final = clip("#{name} (#{code})")
+      @suffixed << "#{code} #{name} → #{final}"
+      final
+    end
+
+    def index(organization)
+      @org_by_id[organization.id] = organization
+      organization.filemaker_codes.each do |code|
+        @codes << code
+        @holders[code] << organization unless @holders[code].include?(organization)
+      end
+    end
+
+    def note_retired(code, name)
+      return unless retired_record?(code) || name.match?(RETIRED_MARKER)
+
+      @retired << "#{code} #{name}"
+    end
+
+    def project_codes
+      @project_codes ||= @projects_by_org.values.flatten.map(&:fm_id)
+    end
+
+    def failed(organization, label)
+      record(:failed, "#{label}: #{organization.errors.full_messages.to_sentence}")
+      nil
+    end
+
+    def record(outcome, message)
+      @results[outcome] << message
+    end
+  end
+end
diff --git a/lib/tasks/fm_import_orgs.rake b/lib/tasks/fm_import_orgs.rake
new file mode 100644
index 0000000000..66aecb7004
--- /dev/null
+++ b/lib/tasks/fm_import_orgs.rake
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+namespace :fm do
+  desc "Import every FileMaker organization into portal organizations (round one). Writes; reruns skip finished rows."
+  task import_orgs: :environment do
+    report = []
+    say = ->(line = "") { puts line; report << line }
+    $stdout.sync = true
+    started = Time.current
+    total = FmOrganization.count
+    Current.source = "fm_import_orgs"
+
+    say.("Reading #{total} FileMaker organizations…")
+    progress = ->(read) { puts "  #{read} / #{total} rows read — #{(Time.current - started).round}s" }
+
+    begin
+      import = OrganizationServices::ImportOrgs.new(progress:).call
+
+      say.("\n== Result ==")
+      import.results.each { |outcome, messages| say.("#{outcome.to_s.humanize.ljust(18)} #{messages.size}") }
+      %i[skipped failed].each do |outcome|
+        messages = import.results[outcome]
+        next if messages.empty?
+
+        say.("\n#{outcome.to_s.humanize} (#{messages.size}):")
+        messages.each { |message| say.("  #{message}") }
+      end
+
+      sections = {
+        "Rows whose ORG code lands on more than one organization" => import.multi_org,
+        "Portal organizations receiving ORG codes from more than one FileMaker organization" => import.condensed,
+        "Project codes not in the portal (round 2)" => import.unmatched_project_codes,
+        "Duplicate names told apart by code" => import.suffixed,
+        "Retired in FileMaker" => import.retired
+      }
+      sections.each do |heading, lines|
+        next if lines.blank?
+
+        say.("\n#{heading} (#{lines.size}):")
+        lines.each { |line| say.("  #{line}") }
+      end
+
+      tallies = {
+        "Status values nothing maps (left blank)" => import.unmatched_statuses,
+        "Organization types read as Other, kept as its description" => import.unmatched_types,
+        "Staff names no alias answers to (credited to the import user)" => import.unmatched_staff
+      }
+      tallies.each do |heading, counts|
+        next if counts.blank?
+
+        say.("\n#{heading}:")
+        counts.sort_by { |name, count| [ -count, name ] }.each { |name, count| say.("  #{count.to_s.rjust(5)}  #{name}") }
+      end
+
+      say.("\nTook #{(Time.current - started).round}s.")
+      say.("Done.")
+    rescue StandardError => e
+      say.("\nStopped by #{e.class}: #{e.message} — the batches before this one are saved; rerun to continue.")
+      raise
+    ensure
+      begin
+        blob = ActiveStorage::Blob.create_and_upload!(
+          io: StringIO.new(report.join("\n")), content_type: "text/plain",
+          filename: "fm-import-orgs-#{Time.current.strftime("%Y%m%d-%H%M%S")}.txt"
+        )
+        puts "\nReport saved. Read it back with: bin/rails runner 'puts ActiveStorage::Blob.find(#{blob.id}).download'"
+      rescue StandardError => e
+        puts "\nCould not save the report (#{e.class}: #{e.message}) — copy the output above."
+      end
+    end
+  end
+end