Ra Capital Management, L.p. — Insider Trades & Holdings | InsiderBid

Ra Capital Management, L.p.

Form 4 filings across 29 companies. Net figures count open-market buys and sales only. EDGAR profile ↗

Lifetime net: +$655M

Positions by company

Reported holding is the most recent post-transaction share count on a Table I row.

Every company this insider has reported trading in, with the value bought and sold at each and the date they last traded.
Ticker	Company	Bought	Sold	Net	Shares held	Last trade
SION	Sionna Therapeutics, Inc.	$0	$43.3M	-$43.3M	3.4M	Sep 17
TYRA	Tyra Biosciences, Inc.	$15.3M	$0	+$15.3M	10.3M	Sep 15
ARTV	Artiva Biotherapeutics, Inc.	$92.7M	$0	+$92.7M	17.3M	Sep 10
VOR	Vor Biopharma Inc.	$0	$83.1M	-$83.1M	1,500	Aug 24
SEPN	Septerna, Inc.	$0	$63.5M

Filing record

How quickly this filer reports. Section 16 allows two business days from the transaction.

1 of 99 filings we hold was filed after the two-business-day deadline. The furthest past the deadline was 35 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Company	Past deadline	Largest line	Source
Feb 18	Apr 12	ACETAdicet Bio, Inc.	35days · about 2 months	$543.4K	Filing ↗

Adicet Bio, Inc.

35days · about 2 months

Traded Feb 18 · filed Apr 12Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays.

Trade history

The 150 most recent Form 4 transactions.

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Ticker	Company	Type	Shares	Price	Value	Δ Own	Filing
Sep 17	SION	Sionna Therapeutics, Inc.	SSELL	33,800	$7.46	$252.1K	-1.0%	Open the original filing on SEC.gov
Sep 17	SION	Sionna Therapeutics, Inc.	SSELL	3.4M	$6.32	$21.6M	-49.5%

SIONSSELL$252.1K

Sionna Therapeutics, Inc.Sep 17

33,800 sh @ $7.46 · -1.0% own

SIONSSELL$21.6M

Sionna Therapeutics, Inc.Sep 17

3.4M sh @ $6.32 · -49.5% own

TYRAPDBUY◆$200M

Tyra Biosciences, Inc.Sep 15

9.1M sh @ $22.03

ARTVAGRANT◆—

Artiva Biotherapeutics, Inc.Sep 10

16,250 sh

ARTVAGRANT◆—

Artiva Biotherapeutics, Inc.Sep 8

13,750 sh

VORMEXER◆—

Vor Biopharma Inc.Aug 24

1,500 sh

VORMEXER$5.6K

Vor Biopharma Inc.Aug 24

1,500 sh @ $3.74

SEPNSSELL$31.7M

Septerna, Inc.Aug 12

746,500 sh @ $42.50 · -50.7% own

SEPNSSELL$31.7M

Septerna, Inc.Aug 12

746,500 sh @ $42.50 · -13.5% own

ARTVPBUY$247.7K

Artiva Biotherapeutics, Inc.Jul 31

24,944 sh @ $9.93 · +0.1% own

IKTJOTHER◆—

Inhibikase Therapeutics,…Jul 29

18M sh

IKTJOTHER—

Inhibikase Therapeutics,…Jul 29

18M sh · -72.1% own

ARTVPBUY$208K

Artiva Biotherapeutics, Inc.Jul 29

20,824 sh @ $9.99 · +0.1% own

ARTVPBUY$412.8K

Artiva Biotherapeutics, Inc.Jul 24

41,319 sh @ $9.99 · +0.2% own

ARTVPBUY$596.4K

Artiva Biotherapeutics, Inc.Jul 23

59,880 sh @ $9.96 · +0.4% own

PBLSPBUY$1.4M

Parabilis Medicines, Inc.Jul 22

47,250 sh @ $29.77 · +0.2% own

ARTVPBUY$835.4K

Artiva Biotherapeutics, Inc.Jul 22

84,124 sh @ $9.93 · +0.5% own

PBLSPBUY$1.1M

Parabilis Medicines, Inc.Jul 21

37,723 sh @ $30.00 · +0.1% own

PBLSPBUY$189.7K

Parabilis Medicines, Inc.Jul 21

6,504 sh @ $29.17 · +<0.1% own

PBLSPBUY$606.6K

Parabilis Medicines, Inc.Jul 21

21,696 sh @ $27.96 · +<0.1% own

ARTVPBUY$1.2M

Artiva Biotherapeutics, Inc.Jul 21

120,582 sh @ $9.55 · +0.7% own

PBLSPBUY$914.4K

Parabilis Medicines, Inc.Jul 20

32,987 sh @ $27.72 · +0.1% own

PBLSPBUY$2.7M

Parabilis Medicines, Inc.Jul 20

98,433 sh @ $27.13 · +0.4% own

FRNMAGRANT$3.4M

Freenome, Inc.Jul 20

336,965 sh @ $10.00 · +37.1% own

FRNMAGRANT$49.2M

Freenome, Inc.Jul 20

4.9M sh @ $10.00 · +67.3% own

FRNMAGRANT—

Freenome, Inc.Jul 20

367,427 sh

FRNMAGRANT—

Freenome, Inc.Jul 20

908,103 sh

FRNMAGRANT—

Freenome, Inc.Jul 20

553,703 sh

FRNMAGRANT—

Freenome, Inc.Jul 20

970,950 sh

FRNMAGRANT—

Freenome, Inc.Jul 20

6.6M sh · +874.9% own

ARTVPBUY$70.5K

Artiva Biotherapeutics, Inc.Jul 17

7,882 sh @ $8.95 · +<0.1% own

ARTVPBUY$1.4M

Artiva Biotherapeutics, Inc.Jul 16

152,472 sh @ $8.93 · +0.9% own

VORXXITM◆$10.5M

Vor Biopharma Inc.Jul 16

2.1M sh @ $5.00

VORSSELL$4.2K

Vor Biopharma Inc.Jul 16

213 sh @ $19.75 · 0.0% own

VORXXITM$4.2K

Vor Biopharma Inc.Jul 16

2.1M sh @ $0.002 · +87.4% own

ARTVPBUY$58.6K

Artiva Biotherapeutics, Inc.Jul 13

6,552 sh @ $8.94 · +<0.1% own

ARTVPBUY↺$58.3K

Artiva Biotherapeutics, Inc.Jul 13

6,522 sh @ $8.94 · +<0.1% own

ARTVPBUY$135.5K

Artiva Biotherapeutics, Inc.Jul 10

15,102 sh @ $8.97 · +<0.1% own

CLYMAGRANT◆—

Climb Bio, Inc.Jun 29

70,284 sh

ARTVPBUY$16.8K

Artiva Biotherapeutics, Inc.Jun 26

1,876 sh @ $8.98 · +<0.1% own

SEPNAGRANT◆—

Septerna, Inc.Jun 26

15,000 sh

ARTVPBUY$275.3K

Artiva Biotherapeutics, Inc.Jun 25

31,000 sh @ $8.88 · +0.2% own

SPRYAGRANT◆—

ARS Pharmaceuticals, Inc.Jun 24

30,000 sh

PEPGAGRANT◆—

PepGen Inc.Jun 18

34,000 sh

SIONAGRANT◆—

Sionna Therapeutics, Inc.Jun 17

17,340 sh

HOWLSSELL$9.7K

Werewolf Therapeutics, Inc.Jun 17

27,695 sh @ $0.35 · -8.4% own

HOWLSSELL$136.2K

Werewolf Therapeutics, Inc.Jun 17

389,216 sh @ $0.35 · -8.4% own

ACRVAGRANT◆—

Acrivon Therapeutics, Inc.Jun 17

20,275 sh

HOWLSSELL$3.7K

Werewolf Therapeutics, Inc.Jun 16

9,939 sh @ $0.37 · -2.9% own

HOWLSSELL$51.7K

Werewolf Therapeutics, Inc.Jun 16

139,686 sh @ $0.37 · -2.9% own

ARTVPBUY$1.1M

Artiva Biotherapeutics, Inc.Jun 16

124,893 sh @ $8.89 · +0.8% own

COAGPBUY$1.5M

Hemab Therapeutics…Jun 16

61,523 sh @ $24.98 · +1.0% own

LENZAGRANT◆—

LENZ Therapeutics, Inc.Jun 15

22,100 sh

HOWLSSELL$3.3K

Werewolf Therapeutics, Inc.Jun 15

8,554 sh @ $0.39 · -2.4% own

HOWLSSELL$46.9K

Werewolf Therapeutics, Inc.Jun 15

120,216 sh @ $0.39 · -2.4% own

ARTVPBUY$138.6K

Artiva Biotherapeutics, Inc.Jun 15

15,414 sh @ $8.99 · +<0.1% own

COAGPBUY$153K

Hemab Therapeutics…Jun 15

6,146 sh @ $24.89 · +0.1% own

HOWLSSELL$4.5K

Werewolf Therapeutics, Inc.Jun 12

11,322 sh @ $0.4 · -3.1% own

HOWLSSELL$63.6K

Werewolf Therapeutics, Inc.Jun 12

159,119 sh @ $0.4 · -3.1% own

ARTVPBUY$3.4M

Artiva Biotherapeutics, Inc.Jun 12

391,019 sh @ $8.57 · +2.4% own

HOWLSSELL$6.6K

Werewolf Therapeutics, Inc.Jun 11

17,437 sh @ $0.38 · -4.6% own

HOWLSSELL$93.1K

Werewolf Therapeutics, Inc.Jun 11

245,066 sh @ $0.38 · -4.6% own

ARTVPBUY$4.3M

Artiva Biotherapeutics, Inc.Jun 11

548,580 sh @ $7.91 · +3.5% own

VORAGRANT◆—

Vor Biopharma Inc.Jun 11

57,162 sh

JANXAGRANT◆—

Janux Therapeutics, Inc.Jun 11

15,500 sh

JANXAGRANT—

Janux Therapeutics, Inc.Jun 11

5,500 sh · +88.0% own

PBLSCCONV◆—

Parabilis Medicines, Inc.Jun 11

1.7M sh

PBLSCCONV◆—

Parabilis Medicines, Inc.Jun 11

9.4M sh

PBLSCCONV◆—

Parabilis Medicines, Inc.Jun 11

160,562 sh

PBLSCCONV◆—

Parabilis Medicines, Inc.Jun 11

642,250 sh

PBLSPBUY$29.2M

Parabilis Medicines, Inc.Jun 11

1.5M sh @ $20.00 · +122.9% own

PBLSPBUY$394.6M

Parabilis Medicines, Inc.Jun 11

19.7M sh @ $20.00 · +300.9% own

PBLSCCONV—

Parabilis Medicines, Inc.Jun 11

1.2M sh

PBLSCCONV—

Parabilis Medicines, Inc.Jun 11

6.6M sh

HOWLSSELL$1.1K

Werewolf Therapeutics, Inc.Jun 10

3,051 sh @ $0.37 · -0.8% own

HOWLSSELL$15.9K

Werewolf Therapeutics, Inc.Jun 10

42,872 sh @ $0.37 · -0.8% own

NKTXAGRANT◆—

Nkarta, Inc.Jun 10

37,000 sh

ARTVPBUY$721

Artiva Biotherapeutics, Inc.Jun 10

103 sh @ $7.00 · 0.0% own

BCAXAGRANT◆—

Bicara Therapeutics Inc.Jun 9

19,475 sh

HOWLSSELL$9.1K

Werewolf Therapeutics, Inc.Jun 9

24,565 sh @ $0.37 · -6.0% own

HOWLSSELL$127.7K

Werewolf Therapeutics, Inc.Jun 9

345,235 sh @ $0.37 · -6.0% own

PBLSAGRANT◆—

Parabilis Medicines, Inc.Jun 9

20,215 sh

ARTVPBUY$3.3M

Artiva Biotherapeutics, Inc.Jun 9

479,039 sh @ $6.91 · +3.1% own

CLYMAGRANT◆—

Climb Bio, Inc.Jun 5

40,000 sh

ABOSAGRANT◆—

Acumen Pharmaceuticals, Inc.Jun 3

53,250 sh

ABOSAGRANT—

Acumen Pharmaceuticals, Inc.Jun 3

35,500 sh · +277.3% own

TYRAAGRANT◆—

Tyra Biosciences, Inc.May 28

13,160 sh

COAGPBUY$24.8K

Hemab Therapeutics…May 20

996 sh @ $24.94 · +<0.1% own

COAGPBUY$94.9K

Hemab Therapeutics…May 19

3,802 sh @ $24.97 · +<0.1% own

ACRVAGRANT—

Acrivon Therapeutics, Inc.May 18

9,366 sh

HOWLSSELL$4.3K

Werewolf Therapeutics, Inc.May 12

6,719 sh @ $0.64 · -1.6% own

HOWLSSELL$60.4K

Werewolf Therapeutics, Inc.May 12

94,432 sh @ $0.64 · -1.6% own

COAGPBUY$159K

Hemab Therapeutics…May 12

6,387 sh @ $24.90 · +0.1% own

COAGPBUY$643K

Hemab Therapeutics…May 11

25,720 sh @ $25.00 · +0.4% own

COAGPBUY$346.2K

Hemab Therapeutics…May 11

14,149 sh @ $24.47 · +0.2% own

HOWLSSELL$3.9K

Werewolf Therapeutics, Inc.May 11

5,812 sh @ $0.67 · -1.4% own

HOWLSSELL$54.7K

Werewolf Therapeutics, Inc.May 11

81,678 sh @ $0.67 · -1.4% own

ARTVPDBUY◆$25M

Artiva Biotherapeutics, Inc.May 11

2.2M sh @ $11.52

ARTVPBUY$75M

Artiva Biotherapeutics, Inc.May 11

6.5M sh @ $11.52 · +74.9% own

COAGPBUY$37K

Hemab Therapeutics…May 8

1,483 sh @ $24.98 · +<0.1% own

HOWLSSELL$17.8K

Werewolf Therapeutics, Inc.May 8

25,012 sh @ $0.71 · -5.6% own

HOWLSSELL$249.6K

Werewolf Therapeutics, Inc.May 8

351,514 sh @ $0.71 · -5.6% own

COAGPBUY$49.5K

Hemab Therapeutics…May 7

1,985 sh @ $24.95 · +<0.1% own

COAGPBUY$192.8K

Hemab Therapeutics…May 7

7,921 sh @ $24.34 · +0.1% own

COAGPBUY$1.3M

Hemab Therapeutics…May 6

53,407 sh @ $24.83 · +0.9% own

COAGPBUY$347.3K

Hemab Therapeutics…May 6

14,611 sh @ $23.77 · +0.2% own

COAGPBUY$256.7K

Hemab Therapeutics…May 5

10,268 sh @ $25.00 · +0.2% own

COAGPBUY$2.1M

Hemab Therapeutics…May 5

87,143 sh @ $24.59 · +1.4% own

COAGCCONV◆—

Hemab Therapeutics…May 4

10,054 sh

COAGCCONV◆—

Hemab Therapeutics…May 4

56,972 sh

COAGCCONV◆—

Hemab Therapeutics…May 4

18,146 sh

COAGCCONV◆—

Hemab Therapeutics…May 4

42,341 sh

COAGCCONV◆—

Hemab Therapeutics…May 4

27,720 sh

COAGCCONV◆—

Hemab Therapeutics…May 4

64,680 sh

COAGPBUY$2.4M

Hemab Therapeutics…May 4

133,750 sh @ $18.00 · +60.5% own

COAGPBUY$45.7M

Hemab Therapeutics…May 4

2.5M sh @ $18.00 · +70.4% own

COAGCCONV—

Hemab Therapeutics…May 4

221,188 sh

COAGCCONV—

Hemab Therapeutics…May 4

1M sh

COAGCCONV—

Hemab Therapeutics…May 4

3.6M sh

CLYMAGRANT◆$20M

Climb Bio, Inc.Apr 29

2.1M sh @ $9.50

PRLDJOTHER◆—

Prelude Therapeutics IncApr 27

1.4M sh

PRLDJOTHER—

Prelude Therapeutics IncApr 27

1.4M sh · -17.8% own

ACETJOTHER◆—

Adicet Bio, Inc.Apr 27

250,000 sh

ACETJOTHER—

Adicet Bio, Inc.Apr 27

250,000 sh · -21.1% own

ACRVAGRANT$7M

Acrivon Therapeutics, Inc.Apr 22

3.9M sh @ $1.80 · +49.1% own

VORSSELL$2.6M

Vor Biopharma Inc.Apr 22

165,150 sh @ $15.77 · -6.4% own

VORSSELL$2.7M

Vor Biopharma Inc.Apr 20

171,963 sh @ $15.77 · -6.3% own

VORSSELL$7.5M

Vor Biopharma Inc.Apr 17

458,411 sh @ $16.28 · -14.3% own

VORSSELL$858.8K

Vor Biopharma Inc.Apr 15

53,644 sh @ $16.01 · -1.7% own

VORSSELL$2.5M

Vor Biopharma Inc.Apr 14

153,735 sh @ $15.97 · -4.5% own

VORSSELL$8.6M

Vor Biopharma Inc.Apr 13

530,610 sh @ $16.15 · -13.5% own

VORSSELL$13K

Vor Biopharma Inc.Apr 10

828 sh @ $15.75 · <0.1% own

VORSSELL$2.2M

Vor Biopharma Inc.Apr 9

135,201 sh @ $16.59 · -3.3% own

VORSSELL$2.2M

Vor Biopharma Inc.Apr 8

130,862 sh @ $16.91 · -3.1% own

VORSSELL$5.8M

Vor Biopharma Inc.Apr 8

353,242 sh @ $16.32 · -7.8% own

VORSSELL$125.3K

Vor Biopharma Inc.Apr 6

6,775 sh @ $18.50 · -0.1% own

VORSSELL$774.2K

Vor Biopharma Inc.Apr 6

44,728 sh @ $17.31 · -1.0% own

VORSSELL$8.9M

Vor Biopharma Inc.Apr 6

537,754 sh @ $16.51 · -10.4% own

VORSSELL$29.1K

Vor Biopharma Inc.Apr 2

1,525 sh @ $19.06 · <0.1% own

VORSSELL$4.7M

Vor Biopharma Inc.Apr 2

258,475 sh @ $18.23 · -4.8% own

WVEPBUY$6.3M

Wave Life Sciences Ltd.Mar 30

971,091 sh @ $6.50 · +3.7% own

MLYSPBUY$1.4M

Mineralys Therapeutics, Inc.Mar 30

58,300 sh @ $24.16 · +1.0% own

WVEPBUY$16M

Wave Life Sciences Ltd.Mar 27

2.5M sh @ $6.43 · +10.6% own

MLYSPBUY$7.4M

Mineralys Therapeutics, Inc.Mar 27

310,700 sh @ $23.67 · +5.7% own

WVEPBUY$2.2M

Wave Life Sciences Ltd.Mar 26

351,224 sh @ $6.38 · +1.5% own

WVEPBUY$30M

Wave Life Sciences Ltd.Mar 26

5M sh @ $6.06 · +27.2% own

ABOSAGRANT$20M

Acumen Pharmaceuticals, Inc.Mar 16

6.1M sh @ $3.30 · +46.5% own

BCAXPDBUY◆$35.2M

Bicara Therapeutics Inc.Feb 26

2.2M sh @ $16.00

BCAXPBUY$4.8M

Bicara Therapeutics Inc.Feb 26

300,000 sh @ $16.00 · +7.0% own

ACETPBUY$543.4K

Adicet Bio, Inc.Feb 20

74,751 sh @ $7.27 · +6.8% own