Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share (SNDX)

Q: What does CUSIP 87164F105 represent in this 13F holders report?

CUSIP 87164F105 is the security identifier for SNDX - Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held SNDX - Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share in Q2 2022?

116 institutional investors reported SNDX - Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share for Q2 2022. Use the holders table for investor-level position and value details.

CUSIP: 87164F105

Q2 2022 13F Holders as of 30 Jun 2022

Security type / class: Equity / Common Stock, par value $0.0001 per share
Total 13F shares: 55,225,664
Total 13F value: $1,062,543,225
Share change: +857,024
Put/Call ratio: 11%
SEC-reported price per share: $19.24
Number of holders: 116
Value change: +$21,478,133
Number of buys: 56
Number of sells: 58
Shares outstanding: 86,328,130

Security key

87164F105

Report period

Q2 2022

Institutions

116

Top holders

SNDX full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2022 Previous quarter: Q1 2022 Syndax Pharmaceuticals Inc SEC filings Syndax Pharmaceuticals Inc company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 87164F105

Newer quarter: Q3 2022 Previous quarter: Q1 2022

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of SNDX - Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Avidity Partners Manageme...

Disclosed value leader

Avidity Partners Manageme...

Comparable rows

15/15

Latest evidence

31 Mar 2022

13F Lead comparable stake: 5.6% Showing 1-6 of 15 holder rows.

Quick read

Avidity Partners Management LP leads the comparable SEC ownership view at 5.6%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Avidity Partners Management LP's linked filing trail.

Comparable ownership Top 5

Avidity Partners Management LP 5.6%

BlackRock Finance, Inc. 4.4%

Frazier Life Sciences Management,... 3.7%

Nantahala Capital Management, LLC 3.1%

VANGUARD GROUP INC 2.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Avidity Partners Management LP	13F Company 13F	5.6%	$83,831,000 4,823,400 shares	—	31 Mar 2022
BlackRock Finance, Inc.	13F Company 13F	4.4%	$66,011,000 3,798,150 shares	—	31 Mar 2022
Frazier Life Sciences Management, L.P.	13F Company 13F	3.7%	$55,536,000 3,195,403 shares	—	31 Mar 2022
Nantahala Capital Management, LLC	13F Company 13F	3.1%	$46,792,000 2,692,303 shares	—	31 Mar 2022
VANGUARD GROUP INC	13F Company 13F	2.8%	$42,277,000 2,432,438 shares	—	31 Mar 2022
BVF INC/IL	13F Company 13F	2.8%	$41,620,000 2,394,714 shares	—	31 Mar 2022

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2022

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

116

55,225,664

Rows available

116

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2022 vs Q1 2022 Across Filers

Q1 2022 holders

136

Q2 2022 holders

116

Holder diff

-20

Investor	Q1 2022 Shares	Q2 2022 Shares	Share Diff	Share Chg %	Q1 2022 value	Q2 2022 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend