Seidenberg Beth C

CIK 0001184592

Director10% Owner

Filings

Latest May 29, 2026

Issuers covered

Showing

36 of 36

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Track record

26 of 28 open-market trades scored (93% price coverage) - 2 issuers without price data. Returns are signed: a +10% move on a sale shows as -10% (insider was wrong).

Horizon	Trades	Win rate	Avg	Median	Best	Worst
30 days	26	38%	-2.6%	-3.1%	+28.9%	-20.6%
90 days	26	85%	+36.0%	+16.7%	+140.8%	-63.0%
180 days	25	96%	+111.7%	+137.3%	+166.5%	-60.2%
365 days	25	96%	+371.2%	+469.6%	+578.7%	-78.7%

Issuers

Companies where Seidenberg Beth C has filed

Ticker	Issuer	Filings	Last filed
VERA	Vera Therapeutics, Inc.	19	May 26, 2026
SLRN	Acelyrin, Inc.	4	May 23, 2025
KYTX	Kyverna Therapeutics, Inc.	4	May 29, 2026
PGNY	Progyny, Inc.	4	May 28, 2024
SGMT	Sagimet Biosciences Inc.	3	Jun 10, 2025
ATRA	Atara Biotherapeutics, Inc.	2	Jun 2, 2023

All filings

36 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
May 29, 2026	KYTXKyverna Therapeutics, Inc.	AGrant	5,093	$0.00	$0
May 26, 2026	VERAVera Therapeutics, Inc.	Holdings only	-	-	-
Dec 22, 2025	KYTXKyverna Therapeutics, Inc.	PPurchase	133,333	$7.50	$999,998
Jun 10, 2025	SGMTSagimet Biosciences Inc.	Holdings only	-	-	-
Jun 2, 2025	KYTXKyverna Therapeutics, Inc.	AGrant	16,634	$0.00	$0
May 23, 2025	SLRNAcelyrin, Inc.	DDisposition	60,000	-	-
May 16, 2025	VERAVera Therapeutics, Inc.	Holdings only	-	-	-
Oct 30, 2024	VERAVera Therapeutics, Inc.	SSale	14,798	$48.0123	$710,486
Sep 20, 2024	VERAVera Therapeutics, Inc.	SSale	13,823	$42.3058	$584,793
Jun 11, 2024	SLRNAcelyrin, Inc.	Holdings only	-	-	-
Jun 7, 2024	SGMTSagimet Biosciences Inc.	Holdings only	-	-	-
May 28, 2024	PGNYProgyny, Inc.	AGrant	7,206	$0.00	$0
May 17, 2024	VERAVera Therapeutics, Inc.	Holdings only	-	-	-
Feb 14, 2024	KYTXKyverna Therapeutics, Inc.	CConversion	3,787,940	-	-
Jul 20, 2023	SGMTSagimet Biosciences Inc.	PPurchase	46,875	$16.00	$750,000
Jun 27, 2023	PGNYProgyny, Inc.	JOther	17,162	$0.00	$0
Jun 13, 2023	PGNYProgyny, Inc.	JOther	1,398,900	$0.00	$0
Jun 2, 2023	ATRAAtara Biotherapeutics, Inc.	AGrant	57,000	$0.00	$0
Jun 1, 2023	PGNYProgyny, Inc.	AGrant	5,116	$0.00	$0
May 12, 2023	VERAVera Therapeutics, Inc.	Holdings only	-	-	-
May 11, 2023	SLRNAcelyrin, Inc.	PPurchase	1,250,000	$18.00	$22,500,000
May 4, 2023	SLRNAcelyrin, Inc.	Holdings only	-	-	-
Apr 3, 2023	VERAVera Therapeutics, Inc.	PPurchase	2,300	$7.2395	$16,651
Mar 30, 2023	VERAVera Therapeutics, Inc.	PPurchase	23,908	$7.2441	$173,192
Mar 28, 2023	VERAVera Therapeutics, Inc.	PPurchase	1,833	$7.2405	$13,272
Mar 21, 2023	VERAVera Therapeutics, Inc.	PPurchase	74,045	$7.1157	$526,882
Mar 17, 2023	VERAVera Therapeutics, Inc.	PPurchase	60,097	$7.093	$426,268
Mar 14, 2023	VERAVera Therapeutics, Inc.	PPurchase	48,003	$7.1555	$343,485
Mar 7, 2023	VERAVera Therapeutics, Inc.	PPurchase	1,000	$7.245	$7,245
Mar 3, 2023	VERAVera Therapeutics, Inc.	PPurchase	23,378	$7.2428	$169,322
Feb 27, 2023	VERAVera Therapeutics, Inc.	PPurchase	200	$7.235	$1,447
Feb 15, 2023	VERAVera Therapeutics, Inc.	PPurchase	10,072	$7.1972	$72,490
Feb 13, 2023	VERAVera Therapeutics, Inc.	PPurchase	400	$7.25	$2,900
Feb 9, 2023	VERAVera Therapeutics, Inc.	PPurchase	131,602	$7.03	$925,162
Jun 27, 2022	ATRAAtara Biotherapeutics, Inc.	AGrant	20,500	$0.00	$0
May 26, 2022	VERAVera Therapeutics, Inc.	Holdings only	-	-	-

Showing 1-36 of 36

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Filed		Top transaction	Shares	Price	Value