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Seidenberg Beth C insider trades
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Seidenberg Beth C insider trades

Seidenberg Beth C has filed 43 Form 4s with the SEC that we hold, for Vera Therapeutics, Inc. (VERA) (Director), Progyny, Inc. (PGNY) (Director), Kyverna Therapeutics, Inc. (KYTX) (Director) and SLRN (Director), among 7 companies in all. Across all of them we count 23 purchases worth $29.6M and 5 sales worth $1.4M reported on Form 4. In the last 12 months: 1 purchase ($1,000.0K) and 0 sales ($0). The largest single trade was a purchase of 1,250,000 shares of SLRN worth $22.5M, dated 2023-05-09. The first filing on our record is dated 2021-07-21 and the latest 2026-08-10.

Vera Therapeutics, Inc. (VERA)

Director · 19 filings · 24 purchases and sales
Trade dateCodeSharesValue as filedFiled
2023-02-03P, purchase reported on Form 446,163$334.2K2023-02-09
2023-02-06P, purchase reported on Form 4131,602$925.2K2023-02-09
2023-02-07P, purchase reported on Form 487,956$622.7K2023-02-09
2023-02-08P, purchase reported on Form 445,357$327.5K2023-02-09
2023-02-09P, purchase reported on Form 4400$2.9K2023-02-13
2023-02-13P, purchase reported on Form 410,072$72.5K2023-02-15
2023-02-23P, purchase reported on Form 4200$1.4K2023-02-27
2023-03-01P, purchase reported on Form 4100$7252023-03-03
2023-03-02P, purchase reported on Form 423,378$169.3K2023-03-03
2023-03-03P, purchase reported on Form 41,000$7.2K2023-03-07
2023-03-10P, purchase reported on Form 448,003$343.7K2023-03-14
2023-03-15P, purchase reported on Form 432,844$233.8K2023-03-17
2023-03-16P, purchase reported on Form 460,097$426.1K2023-03-17
2023-03-17P, purchase reported on Form 474,045$527.2K2023-03-21
2023-03-20P, purchase reported on Form 415,252$110.0K2023-03-21
2023-03-24P, purchase reported on Form 41,833$13.3K2023-03-28
2023-03-27P, purchase reported on Form 41,633$11.8K2023-03-28
2023-03-28P, purchase reported on Form 423,908$173.1K2023-03-30
2023-03-30P, purchase reported on Form 42,300$16.7K2023-04-03
2024-09-18S, sale reported on Form 41,177$49.4K2024-09-20
2024-09-18S, sale reported on Form 41,476$62.0K2024-09-20
2024-09-19S, sale reported on Form 413,823$584.9K2024-09-20
2024-10-28S, sale reported on Form 414,798$710.5K2024-10-30
2024-10-28S, sale reported on Form 4202$10.0K2024-10-30

Progyny, Inc. (PGNY)

Director · 9 filings · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Kyverna Therapeutics, Inc. (KYTX)

Director · 4 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2025-12-18P, purchase reported on Form 4133,333$1,000.0K2025-12-22

SLRN

Director · 4 filings · 2 purchases and sales
Trade dateCodeSharesValue as filedFiled
2023-05-09P, purchase reported on Form 460,000$1.1M2023-05-11
2023-05-09P, purchase reported on Form 41,250,000$22.5M2023-05-11

Sagimet Biosciences Inc. (SGMT)

Director · 4 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2023-07-18P, purchase reported on Form 446,875$750.0K2023-07-20

Atara Biotherapeutics, Inc. (ATRA)

Director · 2 filings · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Latigo Biotherapeutics, Inc. (LTGO)

Director, 10% owner · 1 filing · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1184592) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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