Topper James N

CIK 000134138220 companiesMENLO PARK, CA

SEC Profile

Transactions

Companies

Filings

CIK

0001341382

Recent Transactions

50 trades

Purchase
MBX Biosciences, Inc.$MBX
Common Stock
2025-09-26$18.00/sh+666,666→ 5,219,440 total
Disposition from Tender
HilleVax, Inc.
Common Stock
2025-09-17$1.95/sh−17,199→ 0 total
Disposition from Tender
HilleVax, Inc.
Common Stock
2025-09-17$1.95/sh−8,535,337→ 0 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-09-15$23.70/sh+660→ 3,028,524 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-09-08$24.99/sh+1,260→ 3,027,864 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-08-11$23.98/sh+471→ 3,026,604 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-06-25$18.26/sh+1,260→ 3,026,133 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-06-24$18.43/sh+2,520→ 3,024,873 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-06-16$19.50/sh+8,584→ 3,022,153 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-06-03+10,500→ 42,596 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Stock Option (Right to Buy)
2025-06-03+17,500→ 17,500 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-21$3.86/sh+3,780→ 59,403 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-14$3.32/sh+6,300→ 55,623 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-13$3.16/sh+1,120→ 49,323 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-12$3.04/sh+12,601→ 48,203 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-09$3.19/sh+33,376→ 33,376 total
Purchase
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2025-05-09$3.62/sh+2,226→ 35,602 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-03-26$22.49/sh+1,135→ 3,013,569 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2025-03-04$21.02/sh+4,005→ 3,012,434 total
Purchase
MBX Biosciences, Inc.$MBX
Common Stock
2024-09-16$16.00/sh+625,000→ 4,552,774 total
Conversion
MBX Biosciences, Inc.$MBX
Common Stock
2024-09-16+3,927,774→ 3,927,774 total
Conversion
MBX Biosciences, Inc.$MBX
Series B Convertible Preferred Stock
2024-09-16−28,297,265→ 0 total
Conversion
MBX Biosciences, Inc.$MBX
Series A Convertible Preferred Stock
2024-09-16−18,922,852→ 0 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2024-05-23+10,500→ 32,096 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Stock Option (Right to Buy)
2024-05-23−17,500→ 17,500 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−7,650→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−7,650→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−7,650→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−10,000→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−17,500→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−10,000→ 0 total
Disposition to Issuer
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-05-20−7,650→ 0 total
Disposition from Tender
ALPINE IMMUNE SCIENCES, INC.
Common Stock
2024-05-18−2,829,347→ 0 total
Exercise of In-Money
ALPINE IMMUNE SCIENCES, INC.
Common Stock
2024-04-25$0.00/sh+1,200,000→ 2,829,366 total
Exercise of In-Money
ALPINE IMMUNE SCIENCES, INC.
Warrant (Right to Buy)
2024-04-25−1,200,000→ 0 total
Sale
ALPINE IMMUNE SCIENCES, INC.
Common Stock
2024-04-25$64.57/sh−19→ 2,829,347 total
Purchase
HilleVax, Inc.
Common Stock
2024-04-04$14.50/sh+8,850→ 8,544,187 total
Purchase
NewAmsterdam Pharma Co N.V.$NAMS
Ordinary Shares
2024-03-26$21.50/sh+8,429→ 3,008,429 total
Award
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2024-01-02+17,500→ 17,500 total
Exercise of In-Money
ALPINE IMMUNE SCIENCES, INC.
Warrant (Right to Buy)
2023-12-11−145,251→ 0 total
Exercise of In-Money
ALPINE IMMUNE SCIENCES, INC.
Common Stock
2023-12-11$12.74/sh+145,251→ 1,629,366 total
Purchase
Arcutis Biotherapeutics, Inc.$ARQT
Common Stock
2023-10-24$2.50/sh+80,000→ 8,764,232 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Stock Option (Right to Buy)
2023-05-25+15,000→ 15,000 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Common Stock
2023-05-25+9,000→ 21,596 total
Award
ANAPTYSBIO, INC$ANAB
Stock Option (right to buy)
2023-01-06+10,600→ 10,600 total
Award
ANAPTYSBIO, INC$ANAB
Restricted Stock Unit
2023-01-06+3,900→ 3,900 total
Award
ALPINE IMMUNE SCIENCES, INC.
Stock Option (Right to buy)
2023-01-03+10,000→ 10,000 total
Award
Phathom Pharmaceuticals, Inc.$PHAT
Stock Option (Right to Buy
2022-09-22+20,000→ 20,000 total
Purchase
Arcutis Biotherapeutics, Inc.$ARQT
Common Stock
2022-08-05$20.00/sh+250,000→ 8,684,232 total
Conversion
HilleVax, Inc.
Convertible Promissory Notes
2022-05-03−37,212,795.83→ 0 total

Companies

Recent Filings

Address

70 WILLOW ROAD SUITE 200

MENLO PARK, CA, 94025

View on SEC.gov