Contingency Contract Lead Seal
| Season | Missions | Sec. Sanct. | Medals | Gallery | Trivia |
| This Contingency Contract season has been released in the Global server of Arknights. As such, the content of this page and the related subpages have been archived. |
- This article is about the Contingency Contract event. For the song, see Operation Lead Seal.
Contingency Contract #4 – Operation Lead Seal, often simply known as Contingency Contract #4 (CC4) or Contingency Contract Lead Seal (C.C. Lead Seal), is the sixth season of the namesake seasonal event in Arknights.
Operations
| Permanent Site | Abandoned Mine |
|---|---|
| Rotating Site | Area 6 Ruins • Deserted Factory • East Armory • Locked-Down Prison • Pyrite Gorge • Transport Hub • Windswept Highland |
 | |
Operators
Headhunting
- Main article: Headhunting/Banners/Former/2021
The Earthborn Metals Festival limited headhunting banner is rerunned.
All players who had pulled in the original Earthborn Metals banner during Ancient Forge will receive Headhunting Data Contracts equal to the amount of pulls they made there (given as an in-game mail).
Recruitment
The following Operators are added to the recruitment pool:
The following tag combinations' rates are adjusted to accommodate the additions:
- Rare
- Top Operator + DPS + Slow, Top Operator + Ranged + Slow/Support, Top Operator + Slow/Support, Top Operator + Supporter, Top Operator + Supporter + DPS/Slow/Support (now guarantees Magallan)
Note that all current tags will be refreshed once the recruitment pool are updated.
Outfits
The following outfits are available in the Outfit Store:
| Old |
|---|
Miscellaneous
- During the event, all daily and chip operations are available.
- At the end of the event, players will receive
Operation Lead Seal Supplies based on the amount of 
Operation Agreement they have earned (regardless of whether they are spent to unlock new contracts at the Fixed Site or not).
Operator Record/Paradox Simulation
New Operator Records/Paradox Simulations are added for the following Operators:
| Operator | Operator Record(s) | Paradox Simulation |
|---|---|---|
| A Piece of Grafitti | Not added | |
| One Packed Daily Schedule | The Aesthetics of Explosions | |
| Team Captain | Pain Endurance | |
| What You've Gotta Do | Passion |
Path to Glory
New medals related to the Operator Trust and the Liaison's Medal V are added.