X0306 4 2016-01-25 0 0000831001 CITIGROUP INC C 0001664542 COSTELLO ELLEN CITIGROUP INC. CORPORATE LAW DEPT. 388 GREENWICH STREET NEW YORK NY 10013 1 0 0 0 Common Stock 2016-01-25 4 P 0 1180 40.0705 A 2565 D Common Stock 2016-01-25 4 P 0 620 40.1154 A 3185 D Common Stock 2016-01-25 4 P 0 350 40.1154 A 350 I By Spouse Common Stock 2016-01-26 4 P 0 100 40.4885 A 450 I By Spouse Common Stock 2016-02-08 4 P 0 600 37.9585 A 3785 D Common Stock 2016-02-19 4 P 0 350 38.5138 A 4135 D Common Stock 2016-02-24 4 P 0 230 36.9835 A 680 I By Spouse Common Stock 2016-07-25 4 S 0 100 44.0485 D 4035 D Common Stock 2016-07-25 4 S 0 80 44.0485 D 600 I By Spouse Common Stock 2017-03-13 4 S 0 100 61.5125 D 3935 D Common Stock 2017-04-03 4 S 0 250 59.2212 D 3685 D Common Stock 2017-08-18 4 S 0 275 66.7419 D 3410 D Common Stock 2018-01-09 4 S 0 50 75.6415 D 3360 D Common Stock 2018-01-22 4 P 0 975 78.2195 A 4335 D Common Stock 2018-03-23 4 P 0 340 68.5699 A 4675 D Common Stock 2018-12-26 4 S 0 3855 50.2422 D 820 D Common Stock 2019-02-07 4 P 0 3100 62.4453 A 3920 D Common Stock 4417.4661 D Common Stock 22590.7672 I See Footnote Represents shares of the Issuer's common stock acquired by the Reporting Person in her managed investment account (see Remarks); does not include shares of the Issuer's common stock granted to the Reporting Person by the Issuer as compensation for her service on the Issuer's Board of Directors. Represents shares of the Issuer's common stock acquired by the Reporting Person's spouse in his managed investment account and deemed to be beneficially owned by the Reporting Person (see Remarks). Reflects shares of the Issuer's common stock owned by the Reporting Person's spouse in his managed investment account as of the filing of this Form 4. Reflects shares of the Issuer's common stock owned by the Reporting Person in her managed investment accounts as of the filing of this Form 4; does not include shares of the Issuer's common stock granted to the Reporting Person by the Issuer as compensation for her service on the Issuer's Board of Directors. Represents the Reporting Person's ownership, as of the filing of this Form 4, of shares of the Issuer's common stock granted to the Reporting Person by the Issuer as compensation for her service on the Issuer's Board of Directors and reported on her prior Form 4 filings. Represents the Reporting Person's ownership, as of the filing of this Form 4, of deferred shares of the Issuer's common stock granted to the Reporting Person by the Issuer as compensation for her service on the Issuer's Board of Directors and reported on her prior Form 4 filings. The transactions reported on this Form 4 occurred in managed investment accounts maintained by the Reporting Person and her spouse with an investment advisor who had discretion to make individual investment decisions in the accounts without the prior knowledge or authorization of the Reporting Person or her spouse. The transactions reported on this Form 4 resulted in a short swing profit of $1,625.28, determined in accordance with Section 16 of the Securities Exchange Act of 1934, which the Reporting Person disgorged to the Issuer on August 31, 2020. Ellen Costello by Joseph B. Wollard, Attorney-in-Fact 2020-09-04