Surface Oncology (SURF)

13F shares	Current	Prev Q	Change
Total value	15.68 bn	17.15 bn	-8.6%
Total shares	32.83 mm	39.86 mm	-17.6%
Total puts	20.00 k	800.00	+2400.0%
Total calls	51.20 k	3.00 k	+1606.7%
Total put/call ratio	0.4	0.3	+46.5%

Largest owners	Shares	Value	Change
Armistice Capital	4.89 mm	$4.25 bn	NEW
Novartis Institutes for BioMedical Research	3.95 mm	$36.48 mm	0.0%
Lilly Ventures Fund I	3.45 mm	$31.86 mm	0.0%
Atlas Venture Associates IX	2.95 mm	$2.56 bn	0.0%
Atlas Venture Fund IX	2.95 mm	$0.00	0.0%
Vanguard	2.31 mm	$2.01 bn	0.0%
LLY Eli Lilly and	1.59 mm	$7.62 mm	0.0%
Venrock Healthcare Capital Partners II	1.44 mm	$13.33 mm	0.0%
ARK Investment Management	1.41 mm	$1.23 bn	-74.3%
DAFNA Capital Management	1.10 mm	$956.56 mm	0.0%

Largest transactions	Shares	Bought/sold	Change
Armistice Capital	4.89 mm	+4.89 mm	NEW
ARK Investment Management	1.41 mm	-4.08 mm	-74.3%
EcoR1 Capital	0.00	-3.08 mm	EXIT
Tang Capital Management	0.00	-1.30 mm	EXIT
C Citigroup	37.66 k	-1.01 mm	-96.4%
CMTDF Sumitomo Mitsui Trust	0.00	-999.03 k	EXIT
Nikko Asset Management Americas	0.00	-999.03 k	EXIT
Yakira Capital Management	785.88 k	+785.88 k	NEW
GS The Goldman Sachs Group, Inc.	0.00	-633.57 k	EXIT
Geode Capital Management	667.42 k	+273.11 k	+69.3%

Data from 13F filings, for the last complete 13F reporting period. For most recent data, click the ownership history button. Values as filed, not updated for current price. Long positions only.

Recent insider trades

SURF insider ownership history Insider history

Date	Owner	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value
8 Sep 23	Jessica Fees	Common Stock	Sale back to company	Dispose D	No	No	0	101,915	0.00
8 Sep 23	Jessica Fees	Stock Option Common Stock	Sale back to company	Dispose D	No	No	0.69	150,000	103.50 k
8 Sep 23	Chandra Adams	Common Stock	Sale back to company	Dispose D	No	No	0	23,884	0.00
8 Sep 23	Chandra Adams	Stock Option Common Stock	Sale back to company	Dispose D	No	No	0.69	50,000	34.50 k
8 Sep 23	Chandra Adams	Stock Option Common Stock	Sale back to company	Dispose D	No	No	0.69	50,000	34.50 k
8 Sep 23	Vito J. Palombella	Common Stock	Sale back to company	Dispose D	No	No	0	87,212	0.00
8 Sep 23	Vito J. Palombella	Stock Option Common Stock	Sale back to company	Dispose D	No	No	0.69	150,000	103.50 k
8 Sep 23	Goater Jeff	Common Stock	Sale back to company	Dispose D	No	No	0	129,222	0.00
8 Sep 23	Alison Oneill	Common Stock	Sale back to company	Dispose D	No	No	0	56,686	0.00
8 Sep 23	Alison Oneill	Stock Option Common Stock	Sale back to company	Dispose D	No	No	0.69	150,000	103.50 k

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.