Plain Henry A JR

CIK 00013842864 companiesBOSTON, MA

SEC Profile

Transactions

Companies

Filings

CIK

0001384286

Recent Transactions

50 trades

Conversion
SHOULDER INNOVATIONS, INC.$SI
Common Stock
2025-08-01+1,618,470→ 1,618,470 total
Conversion
SHOULDER INNOVATIONS, INC.$SI
Series C Convertible Preferred Stock
2025-08-01−20,930,233→ 0 total
Purchase
SHOULDER INNOVATIONS, INC.$SI
Common Stock
2025-08-01$15.00/sh+266,666→ 1,885,136 total
Conversion
SHOULDER INNOVATIONS, INC.$SI
Series D Convertible Preferred Stock
2025-08-01−9,950,208→ 0 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$29.60/sh−181→ 286,016 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$27.49/sh−1,296→ 286,496 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$27.49/sh−9,509→ 2,101,291 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$26.48/sh−2,339→ 287,792 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$28.37/sh−299→ 286,197 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$28.37/sh−2,196→ 2,099,095 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$26.48/sh−17,169→ 2,110,800 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$25.29/sh−11,945→ 2,127,969 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$25.29/sh−1,627→ 290,131 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$30.23/sh−60→ 285,956 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$29.60/sh−1,329→ 2,097,766 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-13$30.23/sh−440→ 2,097,326 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$32.16/sh−12→ 291,758 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$31.55/sh−15,942→ 2,140,002 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$31.55/sh−2,172→ 291,770 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$32.16/sh−88→ 2,139,914 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$30.77/sh−7,093→ 2,155,944 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-10$30.77/sh−967→ 293,942 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$31.08/sh−11,452→ 2,219,268 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$31.08/sh−1,560→ 302,571 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$32.06/sh−42,203→ 2,177,065 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$32.06/sh−5,751→ 296,820 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$32.73/sh−14,028→ 2,163,037 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-09$32.73/sh−1,911→ 294,909 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-08$33.23/sh−35,836→ 2,232,251 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-08$33.80/sh−208→ 304,131 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-08$33.23/sh−4,883→ 304,339 total
Sale
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2021-12-08$33.80/sh−1,531→ 2,230,720 total
Purchase
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21$19.00/sh+378,000→ 378,000 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series C Convertible Preferred Stock
2020-07-21−18,705→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series A Convertible Preferred Stock
2020-07-21−683,523→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21+1,498,984→ 2,023,469 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21+1,831,027→ 2,268,087 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series C Convertible Preferred Stock
2020-07-21−137,286→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series B Convertible Preferred Stock
2020-07-21−11,110→ 0 total
Purchase
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21$19.00/sh+22,000→ 22,000 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series B Convertible Preferred Stock
2020-07-21−150,801→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series C Convertible Preferred Stock
2020-07-21−38,660→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21+111,528→ 120,212 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series A Convertible Preferred Stock
2020-07-21−1,633,743→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Common Stock
2020-07-21+249,632→ 309,222 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series C Convertible Preferred Stock
2020-07-21−664,660→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series A Convertible Preferred Stock
2020-07-21−39,758→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series A Convertible Preferred Stock
2020-07-21−222,752→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series B Convertible Preferred Stock
2020-07-21−8,175→ 0 total
Conversion
ALX ONCOLOGY HOLDINGS INC$ALXO
Series B Convertible Preferred Stock
2020-07-21−59,998→ 0 total

Companies

Recent Filings

Address

420 BOYLSTON ST. SUITE 602

BOSTON, MA, 02116

View on SEC.gov