Insider Trading activities at Atreca, Inc. (BCEL)

Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Atreca, Inc. (BCEL) since 2020 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Atreca, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1532346.

Total stock buying since 2020: $76,740.
Total stock sales since 2020: $6,959,377.
Total stock option exercises since 2020: $621,011.

Table 1. Yearly summary of insider stock purchases, sales, and option exercises at *Atreca, Inc.* (*BCEL*).
	Insider Buying		Insider Sales		Option Exercises
Year	Shares	Value	Shares	Value	Shares	Value
2024	1	$0	20,788	$1,455	0	$0
2023	0	$0	316,816	$137,531	0	$0
2022	0	$0	87,632	$255,938	0	$0
2021	0	$0	90,000	$1,231,784	15,000	$75,900
2020	6,000	$76,740	300,491	$5,332,669	119,291	$545,111

Table 2. Monthly summary of insider trading at *Atreca, Inc.* (*BCEL*).
Trading Period	Insider Buying		Insider Sales		Option Exercises
year-month	Shares	Value	Shares	Value	Shares	Value
2024-04	1	$0	20,788	$1,455	0	$0
2023-10	0	$0	274,739	$110,719	0	$0
2023-09	0	$0	22,951	$8,606	0	$0
2023-08	0	$0	19,126	$18,206	0	$0
2022-09	0	$0	42,632	$75,669	0	$0
2022-06	0	$0	15,000	$30,269	0	$0
2022-03	0	$0	30,000	$150,000	0	$0
2021-09	0	$0	30,000	$197,550	0	$0
2021-03	0	$0	20,000	$353,400	5,000	$24,300
2021-02	0	$0	20,000	$379,350	5,000	$25,800
2021-01	0	$0	20,000	$301,484	5,000	$25,800
2020-12	0	$0	20,000	$325,160	5,000	$22,799
2020-11	0	$0	24,500	$370,321	9,500	$43,319
2020-10	0	$0	16,718	$254,426	500	$2,280
2020-09	0	$0	13,782	$207,850	0	$0
2020-08	0	$0	15,000	$225,000	0	$0
2020-07	0	$0	25,272	$524,855	10,272	$46,840
2020-06	0	$0	46,613	$873,804	15,000	$68,400
2020-05	0	$0	39,587	$696,592	15,000	$68,398
2020-04	0	$0	30,000	$492,870	15,000	$68,399
2020-03	6,000	$76,740	15,000	$367,500	15,000	$68,400
2020-02	0	$0	22,100	$444,661	17,100	$77,976
2020-01	0	$0	31,919	$549,630	16,919	$78,300

Table 3. Detailed insider trading at *Atreca, Inc.* (*BCEL*)
Trade Date	Insider Name	Trade Type	Shares	Price ($)	Value ($)
2024-04-11	Orwin John A (PRESIDENT & CEO)	Buy	1	.01	0
2024-04-01	Serafini Tito	Sale	20,788	.07	1,455
2023-10-19	Baker Bros. Advisors (gp) Llc (Other)	Sale	274,739	.40	110,719
2023-09-01	Orwin John A (PRESIDENT & CEO)	Sale	22,951	.38	8,606
2023-08-02	Gould Stephen E (Chief Scientific Officer)	Sale	4,076	.95	3,880
2023-08-02	Courtney Phillips (General Counsel & Secretary)	Sale	4,076	.95	3,880
2023-08-02	Serafini Tito (Chief Strategy Officer)	Sale	5,487	.95	5,223
2023-08-02	Cross Herb (Chief Financial Officer)	Sale	5,487	.95	5,223
2022-09-02	Courtney Phillips (General Counsel & Secretary)	Sale	6,432	1.77	11,416
2022-09-02	Orwin John A (President & CEO)	Sale	20,908	1.77	37,111
2022-09-02	Serafini Tito (Chief Strategy Officer)	Sale	7,646	1.77	13,571
2022-09-02	Cross Herb (Chief Financial Officer)	Sale	7,646	1.77	13,571
2022-06-28	Serafini Tito (Chief Strategy Officer)	Sale	15,000	2.02	30,269
2022-03-04	Serafini Tito (Chief Strategy Officer)	Sale	30,000	5.00	150,000
2021-09-27	Serafini Tito (Chief Strategy Officer)	Sale	30,000	6.58	197,550
2021-03-17	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	16.73	83,650
2021-03-17	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	4.86	24,300
2021-03-15	Robinson William Hewitt (Director)	Sale	5,000	16.89	84,450
2021-03-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	18.53	185,300
2021-02-17	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	18.95	94,750
2021-02-17	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	5.16	25,800
2021-02-16	Robinson William Hewitt (Director)	Sale	5,000	19.07	95,330
2021-02-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	18.93	189,270
2021-01-19	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	15.21	76,045
2021-01-19	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	5.16	25,800
2021-01-14	Robinson William Hewitt (Director)	Sale	2,259	15.06	34,011
2021-01-13	Robinson William Hewitt (Director)	Sale	2,741	15.04	41,238
2021-01-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	15.02	150,190
2020-12-17	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	16.61	83,050
2020-12-17	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	4.56	22,799
2020-12-14	Robinson William Hewitt (Director)	Sale	5,000	16.67	83,370
2020-12-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	15.87	158,740
2020-11-27	Greenberg Norman Michael (Chief Scientific Officer)	Sale	3,175	15.35	48,720
2020-11-27	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	3,175	4.56	14,477
2020-11-17	Greenberg Norman Michael (Chief Scientific Officer)	Sale	1,825	15.04	27,448
2020-11-17	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	1,825	4.56	8,322
2020-11-16	Robinson William Hewitt (Director)	Sale	5,000	15.00	75,000
2020-11-16	Serafini Tito (Chief Strategy Officer)	Sale	8,847	15.12	133,784
2020-11-11	Serafini Tito (Chief Strategy Officer)	Sale	1,153	15.10	17,406
2020-11-10	Greenberg Norman Michael (Chief Scientific Officer)	Sale	4,500	15.10	67,963
2020-11-10	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	4,500	4.56	20,520
2020-10-19	Greenberg Norman Michael (Chief Scientific Officer)	Sale	500	15.12	7,562
2020-10-19	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	500	4.56	2,280
2020-10-13	Robinson William Hewitt (Director)	Sale	5,000	15.71	78,530
2020-10-12	Serafini Tito (Chief Strategy Officer)	Sale	10,000	15.00	150,000
2020-10-06	Serafini Tito (Chief Strategy Officer)	Sale	1,218	15.05	18,334
2020-09-18	Robinson William Hewitt (Director)	Sale	5,000	15.04	75,190
2020-09-18	Serafini Tito (Chief Strategy Officer)	Sale	8,782	15.11	132,660
2020-08-14	Robinson William Hewitt (Director)	Sale	5,000	15.00	75,000
2020-08-14	Serafini Tito (Chief Strategy Officer)	Sale	10,000	15.00	150,000
2020-07-13	Robinson William Hewitt (Director)	Sale	5,000	19.98	99,920
2020-07-13	Serafini Tito (Chief Strategy Officer)	Sale	10,000	19.96	199,650
2020-07-01	Greenberg Norman Michael (Chief Scientific Officer)	Sale	10,272	21.93	225,285
2020-07-01	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	10,272	4.56	46,840
2020-06-25	Robinson William Hewitt (Director)	Sale	600	25.02	15,010
2020-06-25	Serafini Tito (Chief Strategy Officer)	Sale	600	25.01	15,007
2020-06-22	Robinson William Hewitt (Director)	Sale	68	20.05	1,363
2020-06-22	Serafini Tito (Chief Strategy Officer)	Sale	496	20.05	9,944
2020-06-19	Robinson William Hewitt (Director)	Sale	10,245	20.03	205,166
2020-06-19	Serafini Tito (Chief Strategy Officer)	Sale	4,604	20.03	92,204
2020-06-15	Robinson William Hewitt (Director)	Sale	5,000	18.35	91,730
2020-06-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	16.76	167,620
2020-06-01	Greenberg Norman Michael (Chief Scientific Officer)	Sale	15,000	18.38	275,760
2020-06-01	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	15,000	4.56	68,400
2020-05-28	Robinson William Hewitt (Director)	Sale	600	20.01	12,003
2020-05-28	Serafini Tito (Chief Strategy Officer)	Sale	700	20.00	14,003
2020-05-27	Serafini Tito (Chief Strategy Officer)	Sale	100	20.00	2,000
2020-05-26	Robinson William Hewitt (Director)	Sale	387	20.00	7,740
2020-05-26	Serafini Tito (Chief Strategy Officer)	Sale	200	20.00	4,000
2020-05-18	Robinson William Hewitt (Director)	Sale	1,600	20.00	32,003
2020-05-18	Serafini Tito (Chief Strategy Officer)	Sale	1,700	20.00	34,003
2020-05-15	Robinson William Hewitt (Director)	Sale	2,100	20.00	42,000
2020-05-15	Serafini Tito (Chief Strategy Officer)	Sale	2,200	20.00	44,000
2020-05-13	Robinson William Hewitt (Director)	Sale	5,000	17.06	85,290
2020-05-11	Serafini Tito (Chief Strategy Officer)	Sale	10,000	17.93	179,270
2020-05-07	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	18.00	90,000
2020-05-07	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	4.56	22,799
2020-05-01	Greenberg Norman Michael (Chief Scientific Officer)	Sale	10,000	15.03	150,280
2020-05-01	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	10,000	4.56	45,599
2020-04-16	Robinson William Hewitt (Director)	Sale	5,000	16.80	84,015
2020-04-16	Serafini Tito (Chief Strategy Officer)	Sale	10,000	16.83	168,329
2020-04-14	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	18.00	90,000
2020-04-14	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	4.56	22,799
2020-04-08	Greenberg Norman Michael (Chief Scientific Officer)	Sale	8,000	15.01	120,104
2020-04-08	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	8,000	4.56	36,480
2020-04-01	Greenberg Norman Michael (Chief Scientific Officer)	Sale	2,000	15.21	30,422
2020-04-01	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	2,000	4.56	9,120
2020-03-17	Orwin John A (President & CEO)	Buy	6,000	12.79	76,740
2020-03-02	Greenberg Norman Michael (Chief Scientific Officer)	Sale	15,000	24.50	367,500
2020-03-02	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	15,000	4.56	68,400
2020-02-25	Cavet Guy (Chief Technical Officer)	Sale	7,100	20.96	148,801
2020-02-25	Cavet Guy (Chief Technical Officer)	Option Ex	2,100	4.56	9,576
2020-02-03	Greenberg Norman Michael (Chief Scientific Officer)	Sale	15,000	19.72	295,860
2020-02-03	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	15,000	4.56	68,400
2020-01-27	Cavet Guy (Chief Technical Officer)	Sale	10,000	20.00	200,000
2020-01-24	Greenberg Norman Michael (Chief Scientific Officer)	Sale	5,000	18.47	92,345
2020-01-24	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	5,000	4.56	22,799
2020-01-17	Cavet Guy (Chief Technical Officer)	Sale	6,919	15.21	105,265
2020-01-17	Cavet Guy (Chief Technical Officer)	Option Ex	1,919	5.16	9,902
2020-01-17	Greenberg Norman Michael (Chief Scientific Officer)	Sale	10,000	15.20	152,020
2020-01-17	Greenberg Norman Michael (Chief Scientific Officer)	Option Ex	10,000	4.56	45,599

Insider trading activities including stock purchases, stock sales, and option exercises of BCEL listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Atreca, Inc. (symbol BCEL, CIK number 1532346) see the Securities and Exchange Commission (SEC) website.

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