WaveMan · Form 4
Topper James N insider trades
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Topper James N insider trades

Topper James N has filed 27 Form 4s with the SEC that we hold, for NewAmsterdam Pharma Co N.V. (NAMS) (Director), Phathom Pharmaceuticals, Inc. (PHAT) (Director, 10% owner), ALPN (Director) and Anaptysbio, INC (ANAB) (Director, 10% owner), among 5 companies in all. Across all of them we count 16 purchases worth $30.8M and 1 sale worth $1.2K reported on Form 4. None of these purchases or sales is dated in the last 12 months. The largest single trade was a purchase of 1,764,706 shares of HLVX worth $30.0M, dated 2022-05-03. The first filing on our record is dated 2021-09-21 and the latest 2026-05-21.

NewAmsterdam Pharma Co N.V. (NAMS)

Director · 8 filings · 9 purchases and sales
Trade dateCodeSharesValue as filedFiled
2024-03-26P, purchase reported on Form 48,429$181.2K2024-03-28
2025-03-04P, purchase reported on Form 44,005$84.2K2025-03-06
2025-03-26P, purchase reported on Form 41,135$25.5K2025-03-28
2025-06-16P, purchase reported on Form 48,584$167.4K2025-06-18
2025-06-24P, purchase reported on Form 42,520$46.4K2025-06-26
2025-06-25P, purchase reported on Form 41,260$23.0K2025-06-26
2025-08-11P, purchase reported on Form 4471$11.3K2025-08-13
2025-09-08P, purchase reported on Form 41,260$31.5K2025-09-10
2025-09-15P, purchase reported on Form 4660$15.6K2025-09-17

Phathom Pharmaceuticals, Inc. (PHAT)

Director, 10% owner · 8 filings · 6 purchases and sales
Trade dateCodeSharesValue as filedFiled
2025-05-09P, purchase reported on Form 42,226$8.1K2025-05-13
2025-05-09P, purchase reported on Form 433,376$106.5K2025-05-13
2025-05-12P, purchase reported on Form 412,601$38.3K2025-05-13
2025-05-13P, purchase reported on Form 41,120$3.5K2025-05-15
2025-05-14P, purchase reported on Form 46,300$20.9K2025-05-15
2025-05-21P, purchase reported on Form 43,780$14.6K2025-05-23

ALPN

Director · 7 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2024-04-25S, sale reported on Form 419$1.2K2024-04-29

Anaptysbio, INC (ANAB)

Director, 10% owner · 2 filings · 0 purchases and sales

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

HLVX

Director, 10% owner · 2 filings · 1 purchase or sale
Trade dateCodeSharesValue as filedFiled
2022-05-03P, purchase reported on Form 41,764,706$30.0M2022-05-03
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1341382) 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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