Insider Trading History of Epstein David R

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Epstein David R since 2019. This trader's CIK number is 1445826. At the time of last reporting, Epstein David R was the Officer of Tempus Ai, Inc.. (stock ticker symbol TEM). Also see all insider trading activities at Tempus Ai, Inc..

Note that in the past Epstein David R also reported insider trading activities as an insider of the following companies:

Insider Activities at Tempus Ai, Inc. (TEM)
Insider Activities at Seagen Inc. (SGEN)
Insider Activities at Evelo Biosciences, Inc. (EVLO)
Insider Activities at Rubius Therapeutics, Inc. (RUBY)
Insider Activities at Axcella Health Inc. (AXLA)

Yearly summary of insider trading at Evelo Biosciences, Inc. (EVLO) by Epstein David R

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2022	EVLO	17,123	$24,999	0	$0	34,481	$0
2021	EVLO	0	$0	0	$0	24,628	$0
2020	EVLO	17,700	$96,587	0	$0	0	$0

Yearly summary of insider trading at Tempus Ai, Inc. (TEM) by Epstein David R

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2025	TEM	0	$0	2,600	$138,499	0	$0
2024	TEM	0	$0	620	$25,922	0	$0

Yearly summary of insider trading at Axcella Health Inc. (AXLA) by Epstein David R

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2022	AXLA	26,178	$49,999	0	$0	4,604	$0
2021	AXLA	0	$0	0	$0	12,277	$0
2020	AXLA	64,805	$291,738	0	$0	0	$0
2019	AXLA	68,303	$444,978	0	$0	0	$0

Yearly summary of insider trading at Rubius Therapeutics, Inc. (RUBY) by Epstein David R

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2022	RUBY	30,000	$43,320	0	$0	0	$0
2021	RUBY	0	$0	125,441	$1,867,372	0	$0
2020	RUBY	15,000	$57,900	0	$0	0	$0

Yearly summary of insider trading at Seagen Inc. (SGEN) by Epstein David R

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2023	SGEN	0	$0	10,620	$2,262,166	0	$0

Insider trading activities at 5 companies by Epstein David R:

1. Evelo Biosciences, Inc. (EVLO)

2. Tempus Ai, Inc. (TEM)

3. Axcella Health Inc. (AXLA)

4. Rubius Therapeutics, Inc. (RUBY)

5. Seagen Inc. (SGEN)

Table 1. Insider trading of Evelo Biosciences, Inc. (EVLO) by Epstein David R

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2022-06-30	EVLO	Option Ex	4,927	.00	0
2022-05-31	EVLO	Option Ex	4,925	.00	0
2022-05-27	EVLO	Buy	17,123	1.46	24,999
2022-05-02	EVLO	Option Ex	4,926	.00	0
2022-03-31	EVLO	Option Ex	4,926	.00	0
2022-02-28	EVLO	Option Ex	4,926	.00	0
2022-01-31	EVLO	Option Ex	4,925	.00	0
2021-12-31	EVLO	Option Ex	4,926	.00	0
2021-11-30	EVLO	Option Ex	4,926	.00	0
2021-11-01	EVLO	Option Ex	4,925	.00	0
2021-10-01	EVLO	Option Ex	4,927	.00	0
2021-09-03	EVLO	Option Ex	9,850	.00	0
2020-12-11	EVLO	Buy	7,700	6.77	52,152
2020-08-28	EVLO	Buy	4,248	4.37	18,563
2020-08-31	EVLO	Buy	5,752	4.50	25,872

Table 2. Insider trading of Tempus Ai, Inc. (TEM) by Epstein David R

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2025-09-02	TEM	Sale	250	73.64	18,410
2025-08-01	TEM	Sale	370	55.16	20,409
2025-06-02	TEM	Sale	250	55.20	13,800
2025-05-01	TEM	Sale	370	53.50	19,795
2025-03-17	TEM	Sale	990	46.83	46,361
2025-02-03	TEM	Sale	370	53.31	19,724
2024-12-11	TEM	Sale	620	41.81	25,922

Table 3. Insider trading of Axcella Health Inc. (AXLA) by Epstein David R

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2022-03-18	AXLA	Option Ex	1,535	.00	0
2022-03-16	AXLA	Buy	26,178	1.91	49,999
2022-02-18	AXLA	Option Ex	1,534	.00	0
2022-01-18	AXLA	Option Ex	1,535	.00	0
2021-12-17	AXLA	Option Ex	1,535	.00	0
2021-11-18	AXLA	Option Ex	1,534	.00	0
2021-10-18	AXLA	Option Ex	1,535	.00	0
2021-09-17	AXLA	Option Ex	1,535	.00	0
2021-08-18	AXLA	Option Ex	1,534	.00	0
2021-07-16	AXLA	Option Ex	1,535	.00	0
2021-05-18	AXLA	Option Ex	1,534	.00	0
2021-04-18	AXLA	Option Ex	1,535	.00	0
2020-05-18	AXLA	Buy	50,000	4.75	237,500
2020-02-27	AXLA	Buy	12,800	3.65	46,720
2020-02-28	AXLA	Buy	2,005	3.75	7,518
2019-11-26	AXLA	Buy	14,000	3.55	49,700
2019-11-27	AXLA	Buy	1,005	3.91	3,929
2019-11-27	AXLA	Buy	1,005	3.91	3,929
2019-11-26	AXLA	Buy	14,000	3.55	49,700
2019-08-01	AXLA	Buy	4,092	6.98	28,562
2019-08-02	AXLA	Buy	2,849	7.04	20,056
2019-07-17	AXLA	Buy	1,000	7.55	7,550
2019-07-10	AXLA	Buy	1,322	8.07	10,668
2019-07-09	AXLA	Buy	4,200	8.24	34,608
2019-07-08	AXLA	Buy	274	9.00	2,466
2019-07-01	AXLA	Buy	1,000	8.73	8,735
2019-07-02	AXLA	Buy	3,500	8.77	30,677
2019-07-03	AXLA	Buy	56	8.99	503
2019-06-28	AXLA	Buy	5,400	10.04	54,215
2019-06-27	AXLA	Buy	100	9.15	915
2019-06-26	AXLA	Buy	14,500	9.57	138,765

Table 4. Insider trading of Rubius Therapeutics, Inc. (RUBY) by Epstein David R

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2022-04-21	RUBY	Buy	30,000	1.44	43,320
2021-02-11	RUBY	Sale	26,704	14.93	398,557
2021-02-08	RUBY	Sale	89,233	14.88	1,328,143
2021-02-09	RUBY	Sale	2,100	14.83	31,145
2021-02-10	RUBY	Sale	7,404	14.79	109,527
2020-03-17	RUBY	Buy	5,000	3.76	18,800
2020-03-13	RUBY	Buy	10,000	3.91	39,100

Table 5. Insider trading of Seagen Inc. (SGEN) by Epstein David R

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2023-11-10	SGEN	Sale	10,620	213.01	2,262,166

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Epstein David R (Officer of Tempus Ai, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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