Vault-13

SELLAS LIFE SCIENCES GROUP I SLS

COM NEW · Common Stock · CUSIP 81642T209

Company in San Ramon, United States

31 institutional holders +0 vs Q1 2024
4,080,2964.1m shares reported held*
6.3% of all shares outstanding*
$4.9mreported value*
9 new 12 added 2 reduced 9 sold out net sold ≈ $4.4m (-3.7m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 64.3m as of 2024-08-12, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.19. Options: 9 managers hold calls ($7.4m notional), 4 hold puts ($71.0k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

02040Q3 22: 29Q4 22: 30Q1 23: 23Q2 23: 26Q3 23: 29Q4 23: 32Q1 24: 31Q2 24: 3131Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 202229
Q4 202230
Q1 202323
Q2 202326
Q3 202329
Q4 202332
Q1 202431
Q2 202431

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q4 22: 17 bought or addedQ4 22: 12 cut or sold outQ4 22Q1 23: 10 bought or addedQ1 23: 12 cut or sold outQ2 23: 14 bought or addedQ2 23: 6 cut or sold outQ2 23Q3 23: 14 bought or addedQ3 23: 8 cut or sold outQ4 23: 21 bought or addedQ4 23: 8 cut or sold outQ4 23Q1 24: 15 bought or addedQ1 24: 14 cut or sold outQ2 24: 21 bought or addedQ2 24: 11 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 20221712
Q1 20231012
Q2 2023146
Q3 2023148
Q4 2023218
Q1 20241514
Q2 20242111

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6m$8mQ3 23 calls: $3.0mQ3 23 puts: $33.8kQ3 23P/C 0.01Q4 23 calls: $2.6mQ4 23 puts: $50.2kQ4 23P/C 0.02Q1 24 calls: $3.7mQ1 24 puts: $26.9kQ1 24P/C 0.01Q2 24 calls: $7.4mQ2 24 puts: $71.0kQ2 24P/C 0.01
Numbers
QuarterCallsPutsP/C
Q3 2023$3.0m$33.8k0.01
Q4 2023$2.6m$50.2k0.02
Q1 2024$3.7m$26.9k0.01
Q2 2024$7.4m$71.0k0.01

Biggest buyers

VANGUARD GROUP INC Added +273,099+273.1k
GEODE CAPITAL MANAGEMENT, LLC Added +243,945+243.9k
Diametric Capital, LP New +153,019+153.0k
BlackRock Inc. Added +152,150+152.2k
MILLENNIUM MANAGEMENT LLC New +150,448+150.4k
PRELUDE CAPITAL MANAGEMENT, LLC New +55,726+55.7k
LPL Financial LLC New +51,894+51.9k
STATE STREET CORP Added +36,900+36.9k
RENAISSANCE TECHNOLOGIES LLC New +32,446+32.4k
JANE STREET GROUP, LLC New +27,994+28.0k

Biggest sellers

Anson Funds Management LP Sold out -4,832,368-4.8m
Prosperity Financial Group, Inc. Sold out -25,385-25.4k
CANTOR FITZGERALD, L. P. Sold out -24,750-24.8k
CITADEL ADVISORS LLC Sold out -19,718-19.7k
XTX Topco Ltd Sold out -17,391-17.4k
JPMORGAN CHASE & CO Sold out -12,184-12.2k
Brooklyn FI, LLC Sold out -11,178-11.2k
Tower Research Capital LLC (TRC) Reduced -7,094-7.1k
MORGAN STANLEY Reduced -963-963
WELLS FARGO & COMPANY/MN Sold out -301-301

Biggest calls

GROUP ONE TRADING LLC Added $3.0m2.5m shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $2.0m1.6m shares
Alyeska Investment Group, L.P. Added $1.8m1.5m shares
SIMPLEX TRADING, LLC Reduced $509.0k428.2k shares
CITADEL ADVISORS LLC Added $176.4k148.2k shares
Belvedere Trading LLC New $15.1k12.7k shares
JANE STREET GROUP, LLC Unchanged $11.9k10.0k shares
HIGHBRIDGE CAPITAL MANAGEMENT LLC New $1.2k1.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $53.1k44.6k shares
CITADEL ADVISORS LLC Added $13.9k11.7k shares
SIMPLEX TRADING, LLC Added $4.0k3.4k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution +1.1 pts · filed 2026-10-27 7.9% +1.1 pts 15.9m≈ $234.3m 2026-10-27
STATE STREET CORP 13G · institution new · filed 2026-08-07 7.0% new 13.0m≈ $191.8m 2026-08-07
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 5.2% new 9.7m≈ $142.7m 2026-07-31

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Anson Funds Management LP (4.9%, 2026-02-17), HIGHBRIDGE CAPITAL MANAGEMENT LLC (3.7%, 2026-01-30)

Insider purchases and sales in Q2 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q3 22: 0 buyingQ3 22: 0 sellingQ4 22: 0 buyingQ4 22: 3 sellingQ4 22Q1 23: 0 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 0 sellingQ2 23Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 0 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 0 buyingQ2 24: 0 sellingQ2 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20220—0——
Q4 20220—3$25.5k—
Q1 20230—0——
Q2 20230—0——
Q3 20230—0——
Q4 20230—0——
Q1 20240—0——
Q2 20240—0——

None reported in Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 1,786,3341.8m $2.1m $2.1m 0.00% Added +273.1k +273,099
2 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 517,008517.0k $615.3k $615.3k 0.00% Added +243.9k +243,945
3 BlackRock Inc. 0.00% of their portfolio New York, NY 430,368430.4k $512.1k $512.1k 0.00% Added +152.2k +152,150
4 Opus Capital Group, LLC 0.04% of their portfolio CINCINNATI, OH 221,000221.0k $263.0k $263.0k 0.04% Added +20.4k +20,400
5 Equitable Holdings, Inc. 0.00% of their portfolio NEW YORK, NY 210,000210.0k $249.9k $249.9k 0.00% Added +10.0k +10,000
6 Diametric Capital, LP 0.10% of their portfolio BOSTON, MA 153,019153.0k $182.1k $182.1k 0.10% New
7 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 150,448150.4k $179.0k $179.0k 0.00% New
8 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 134,029134.0k $159.5k $159.5k 0.00% Added +36.9k +36,900
9 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 100,843100.8k $120.0k $120.0k 0.00% Added +12.1k +12,113
10 Virtu Financial LLC 0.01% of their portfolio New York, NY 63,84363.8k $76.0k $76.0k 0.01% Added +24.4k +24,414
11 PRELUDE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 55,72655.7k $66.3k $66.3k 0.01% New
12 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 51,89451.9k $61.8k $61.8k 0.00% New
13 Mariner, LLC 0.00% of their portfolio Overland Park, KS 44,92944.9k $53.5k $53.5k 0.00% Added +19.7k +19,672
14 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 32,44632.4k $38.6k $38.6k 0.00% New
15 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 27,99428.0k $33.3k $33.3k 0.00% New
16 INDEPENDENT FINANCIAL GROUP, LLC 0.00% of their portfolio SAN DIEGO, CA 23,25023.2k $27.7k $27.7k 0.00% Added +3.0k +3,000
17 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 16,23816.2k $19.3k $19.3k 0.00% Unchanged
18 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 15,55415.6k $19.0k $19.0k 0.00% Added +1.5k +1,500
19 WEDBUSH SECURITIES INC 0.00% of their portfolio PASADENA, CA 15,00015.0k $18.0k $18.0k 0.00% New
20 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 13,63113.6k $16.2k $16.2k 0.00% Reduced -7.1k -7,094
21 Nemes Rush Group LLC 0.00% of their portfolio NOVI, MI 10,00010.0k $11.9k $11.9k 0.00% Unchanged
22 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3,2973.3k $3.9k $3.9k 0.00% Reduced -963 -963
23 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,6601.7k $2.0k $2.0k 0.00% Unchanged
24 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 669669 $1.0k $1.0k 0.00% Added +446 +446
25 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 577577 $687 $687 0.00% New
26 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 374374 $445 $445 0.00% New
27 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 150150 $167 $167 0.00% Unchanged
28 JANICZEK WEALTH MANAGEMENT, LLC 0.00% of their portfolio DENVER, CO 1111 $14 $14 0.00% Unchanged
29 Parkside Financial Bank & Trust 0.00% of their portfolio SAINT LOUIS, MO 22 $3 $3 0.00% Unchanged
30 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 22 $2 $2 0.00% Unchanged
31 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged