diff --git a/docs/mammon-api.yml b/docs/mammon-api.yml
index 295d05c..a5ee825 100644
--- a/docs/mammon-api.yml
+++ b/docs/mammon-api.yml
@@ -1499,6 +1499,46 @@ components:
           type: string
       required:
       - type
+    ActivitySourceResponse:
+      type: object
+      description: "Where an activity or transaction came from: a character, a corporation\
+        \ wallet, or nothing (a manual entry)."
+      properties:
+        type:
+          type: string
+          description: The kind of source.
+          enum:
+          - CHARACTER
+          - CORPORATION
+          - NONE
+          example: CHARACTER
+        characterId:
+          type:
+          - integer
+          - "null"
+          format: int64
+          description: "EVE character id, when the source is a character."
+          example: 2112625428
+        corporationId:
+          type:
+          - integer
+          - "null"
+          format: int64
+          description: "EVE corporation id, when the source is a corporation."
+          example: 98000001
+        division:
+          type:
+          - integer
+          - "null"
+          format: int32
+          description: "Corporation wallet division (1-7), when the source is a corporation\
+            \ and it is known."
+          example: 4
+      required:
+      - characterId
+      - corporationId
+      - division
+      - type
     IskTransferResponse:
       allOf:
       - $ref: "#/components/schemas/TransferResponse"
@@ -1563,13 +1603,10 @@ components:
           format: uuid
           description: Unique transaction identifier.
           example: 3fa85f64-5717-4562-b3fc-2c963f66afa6
-        characterId:
-          type:
-          - integer
-          - "null"
-          format: int64
-          description: "EVE character id the transaction is attributed to, if any."
-          example: 2112625428
+        source:
+          $ref: "#/components/schemas/ActivitySourceResponse"
+          description: "Where the transaction is attributed: a character, a corporation,\
+            \ or nothing."
         datetime:
           type: string
           format: date-time
@@ -1585,9 +1622,9 @@ components:
           items:
             $ref: "#/components/schemas/TransferResponse"
       required:
-      - characterId
       - datetime
       - description
+      - source
       - transactionId
       - transfers
     TransferResponse:
@@ -1649,17 +1686,16 @@ components:
           format: uuid
           description: Unique acquisition identifier.
           example: 3fa85f64-5717-4562-b3fc-2c963f66afa6
-        characterId:
-          type: integer
-          format: int64
-          description: EVE character id that made the acquisition.
-          example: 2112625428
+        source:
+          $ref: "#/components/schemas/ActivitySourceResponse"
+          description: "Where the acquisition came from: a character, a corporation,\
+            \ or nothing."
         marketTypeId:
           type: integer
           format: int64
           description: EVE market type (item) id that was acquired.
           example: 34
-        source:
+        origin:
           type: string
           description: How the item entered the inventory.
           enum:
@@ -1686,9 +1722,9 @@ components:
           example: 5.42
       required:
       - acquisitionId
-      - characterId
       - datetime
       - marketTypeId
+      - origin
       - quantity
       - remaining
       - source
diff --git a/src/activity/SourceLabel.vue b/src/activity/SourceLabel.vue
new file mode 100644
index 0000000..8ef72f9
--- /dev/null
+++ b/src/activity/SourceLabel.vue
@@ -0,0 +1,32 @@
+<script setup lang="ts">
+
+import {computedAsync} from "@vueuse/core";
+import {ActivitySourceResponse, ActivitySourceResponseTypeEnum} from "@/generated/mammon";
+import {CharacterLabel, useCharactersStore} from "@/characters";
+import {CorporationLabel} from "@/corporations";
+
+interface Props {
+  source: ActivitySourceResponse;
+  size?: number;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  size: 32
+});
+
+const charactersStore = useCharactersStore();
+
+const character = computedAsync(async () => {
+  if (props.source.type === ActivitySourceResponseTypeEnum.Character && props.source.characterId) {
+    return await charactersStore.findById(props.source.characterId);
+  }
+  return undefined;
+}, undefined);
+</script>
+
+<template>
+  <CharacterLabel v-if="source.type === ActivitySourceResponseTypeEnum.Character && character" :character="character" :size="size" />
+  <CorporationLabel v-else-if="source.type === ActivitySourceResponseTypeEnum.Corporation && source.corporationId" :corporation-id="source.corporationId" :division="source.division" :size="size" />
+
+  <span v-else class="text-slate-400">&mdash;</span>
+</template>
diff --git a/src/activity/index.ts b/src/activity/index.ts
new file mode 100644
index 0000000..389d889
--- /dev/null
+++ b/src/activity/index.ts
@@ -0,0 +1 @@
+export {default as SourceLabel} from './SourceLabel.vue';
diff --git a/src/corporations/CorporationLabel.vue b/src/corporations/CorporationLabel.vue
new file mode 100644
index 0000000..d1b2a19
--- /dev/null
+++ b/src/corporations/CorporationLabel.vue
@@ -0,0 +1,19 @@
+<script setup lang="ts">
+
+interface Props {
+  corporationId: number;
+  division?: number | null;
+  size?: number;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  size: 32
+})
+</script>
+
+<template>
+  <div class="flex">
+    <img class="me-2" :src="`https://images.evetech.net/corporations/${corporationId}/logo?size=${size}`" />
+    <span>Corporation<template v-if="division"> &middot; Division {{ division }}</template></span>
+  </div>
+</template>
diff --git a/src/corporations/index.ts b/src/corporations/index.ts
new file mode 100644
index 0000000..5b1d9a6
--- /dev/null
+++ b/src/corporations/index.ts
@@ -0,0 +1 @@
+export {default as CorporationLabel} from './CorporationLabel.vue';
diff --git a/src/generated/mammon/api.ts b/src/generated/mammon/api.ts
index b59ad67..f512f93 100644
--- a/src/generated/mammon/api.ts
+++ b/src/generated/mammon/api.ts
@@ -32,9 +32,9 @@ export interface AcquisitionResponse {
      */
     'acquisitionId': string;
     /**
-     * EVE character id that made the acquisition.
+     * Where the acquisition came from: a character, a corporation, or nothing.
      */
-    'characterId': number;
+    'source': ActivitySourceResponse;
     /**
      * EVE market type (item) id that was acquired.
      */
@@ -42,7 +42,7 @@ export interface AcquisitionResponse {
     /**
      * How the item entered the inventory.
      */
-    'source': AcquisitionResponseSourceEnum;
+    'origin': AcquisitionResponseOriginEnum;
     /**
      * When the acquisition occurred.
      */
@@ -61,12 +61,42 @@ export interface AcquisitionResponse {
     'unitCost': number;
 }
 
-export const AcquisitionResponseSourceEnum = {
+export const AcquisitionResponseOriginEnum = {
     Bought: 'BOUGHT',
     Manual: 'MANUAL',
 } as const;
 
-export type AcquisitionResponseSourceEnum = typeof AcquisitionResponseSourceEnum[keyof typeof AcquisitionResponseSourceEnum];
+export type AcquisitionResponseOriginEnum = typeof AcquisitionResponseOriginEnum[keyof typeof AcquisitionResponseOriginEnum];
+
+/**
+ * Where an activity or transaction came from: a character, a corporation wallet, or nothing (a manual entry).
+ */
+export interface ActivitySourceResponse {
+    /**
+     * The kind of source.
+     */
+    'type': ActivitySourceResponseTypeEnum;
+    /**
+     * EVE character id, when the source is a character.
+     */
+    'characterId': number | null;
+    /**
+     * EVE corporation id, when the source is a corporation.
+     */
+    'corporationId': number | null;
+    /**
+     * Corporation wallet division (1-7), when the source is a corporation and it is known.
+     */
+    'division': number | null;
+}
+
+export const ActivitySourceResponseTypeEnum = {
+    Character: 'CHARACTER',
+    Corporation: 'CORPORATION',
+    None: 'NONE',
+} as const;
+
+export type ActivitySourceResponseTypeEnum = typeof ActivitySourceResponseTypeEnum[keyof typeof ActivitySourceResponseTypeEnum];
 
 /**
  * The balance of a ledger: its ISK total plus the quantity of each item type held.
@@ -604,9 +634,9 @@ export interface TransactionResponse {
      */
     'transactionId': string;
     /**
-     * EVE character id the transaction is attributed to, if any.
+     * Where the transaction is attributed: a character, a corporation, or nothing.
      */
-    'characterId': number | null;
+    'source': ActivitySourceResponse;
     /**
      * When the transaction occurred.
      */
diff --git a/src/market/acquisition/acquisition.ts b/src/market/acquisition/acquisition.ts
index 513c454..02ea897 100644
--- a/src/market/acquisition/acquisition.ts
+++ b/src/market/acquisition/acquisition.ts
@@ -1,7 +1,7 @@
 import {defineStore} from "pinia";
 import {computed, ref} from "vue";
 import {acquisitionApi} from "@/mammon";
-import {AcquisitionResponse, AcquisitionResponseSourceEnum} from "@/generated/mammon";
+import {AcquisitionResponse, ActivitySourceResponse} from "@/generated/mammon";
 
 export type AcquiredTypeSource = 'bo' | 'so' | 'prod' | 'misc';
 
@@ -12,7 +12,7 @@ export type RawAcquiredType = {
     remaining: number;
     price: number;
     date: Date;
-    source: AcquisitionResponseSourceEnum;
+    source: ActivitySourceResponse;
 }
 
 const toAcquiredType = (a: AcquisitionResponse): RawAcquiredType => ({
diff --git a/src/pages/ledger/ListLedgerTransactions.vue b/src/pages/ledger/ListLedgerTransactions.vue
index aa1b027..0df4889 100644
--- a/src/pages/ledger/ListLedgerTransactions.vue
+++ b/src/pages/ledger/ListLedgerTransactions.vue
@@ -2,12 +2,13 @@
 
 import {findAllTransactionInLeger, useLedgerParam} from "@/ledger";
 import {computedAsync} from "@vueuse/core";
-import {TransactionResponse} from "@/generated/mammon";
+import {ActivitySourceResponseTypeEnum, TransactionResponse} from "@/generated/mammon";
 import {IskLabel} from "@/market";
 import {SortableHeader, useSort, VirtualScrollTable} from "@/components/table";
 import {TransferList, TransferTypes} from "@/transaction";
 import {Dropdown} from "@/components";
-import {CharacterLabel, useCharactersStore} from "@/characters";
+import {SourceLabel} from "@/activity";
+import {useCharactersStore} from "@/characters";
 import {formatEveDate} from "@/formaters.ts";
 
 const {ledgerId} = useLedgerParam();
@@ -21,10 +22,13 @@ const transactions = computedAsync<TransactionResponse[]>(async () => {
 }, []);
 
 const { sortedArray, headerProps } = useSort(computedAsync(() => Promise.all(transactions.value.map(async transaction => {
-  const character = await charactersStore.findById(transaction.characterId);
+  const source = transaction.source;
+  const character = source.type === ActivitySourceResponseTypeEnum.Character && source.characterId
+    ? await charactersStore.findById(source.characterId)
+    : undefined;
   return {
-    character,
-    characterName: character?.name ?? "",
+    source,
+    sourceName: character?.name ?? (source.type === ActivitySourceResponseTypeEnum.Corporation ? "Corporation" : ""),
     transactionId: transaction.transactionId,
     description: transaction.description,
     date: new Date(transaction.datetime),
@@ -59,7 +63,7 @@ const getIskBalance = (transaction: TransactionResponse) => {
       <template #default="{ list }">
         <thead>
         <tr>
-          <SortableHeader v-bind="headerProps" sortKey="characterName">Character</SortableHeader>
+          <SortableHeader v-bind="headerProps" sortKey="sourceName">Source</SortableHeader>
           <SortableHeader v-bind="headerProps" sortKey="date">Date</SortableHeader>
           <SortableHeader v-bind="headerProps" sortKey="balance">Isk Change</SortableHeader>
           <SortableHeader v-bind="headerProps" sortKey="description">Description</SortableHeader>
@@ -68,7 +72,7 @@ const getIskBalance = (transaction: TransactionResponse) => {
         <tbody>
         <tr v-for="t in list" :key="t.data.transactionId">
           <td>
-            <CharacterLabel v-if="t.data.character" :character="t.data.character" />
+            <SourceLabel :source="t.data.source" />
           </td>
           <td>
             <Dropdown class="transfer-dropdown">