United States Pharmaceuticals

Sellas Life Sciences Group Inc (SLS)

Track

The most recent insider trading activity occurred on November 19, 2025, with a BUY transaction by Katherine Bach. Prior to this, there were several BUY transactions in May and June 2025. The last SELL transaction was on December 5, 2022, involving multiple executives.
Ticker: SLS Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Sellas Life Sciences Group Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Kalin Katherine Bach
1 purchase — total 100,806 USD
Buy 19 Nov 2025
Value US$1,712,446.61 | Price 52.35 | Shares 99,769
Buy 12 Jun 2025
Value US$4,728,098.79 | Price 131.19 | Shares 75,915
Buy 30 May 2025
Value US$33,800.00 | Price 1.69 | Shares 20,000
Buy 22 May 2025
Value US$36,000.00 | Price 1.80 | Shares 20,000
Sale 5 Dec 2022
Value US$16,938.30 | Price 2.61 | Shares 6,494
Sale 5 Dec 2022
Value US$3,001.81 | Price 2.59 | Shares 1,159
Sale 5 Dec 2022
Value US$5,576.27 | Price 2.59 | Shares 2,153
Sale 2 Dec 2021
Value US$5,297.73 | Price 6.25 | Shares 847
Sale 2 Dec 2021
Value US$13,251.91 | Price 6.25 | Shares 2,120
Sale 2 Dec 2021
Value US$1,447.75 | Price 6.27 | Shares 231
Sale 31 Dec 2018
Value US$29,189.36 | Price 1.25 | Shares 23,277
Sale 20 Jun 2017
Value US$273.05 | Price 0.55 | Shares 500
Sale 8 Feb 2017
Value US$1,985,290.44 | Price 0.84 | Shares 2,363,441
Sale 1 Jun 2016
Value US$276,587.50 | Price 2.18 | Shares 126,875
Sale 12 Feb 2014
Value US$812,437.50 | Price 4.33 | Shares 187,500
Buy 7 Feb 2014
Value US$98,742.00 | Price 4.94 | Shares 20,000
Sale 3 Feb 2014
Value US$1,253,040.00 | Price 4.18 | Shares 300,000
Sale 30 Jan 2014
Value US$140,255.00 | Price 5.61 | Shares 25,000
Sale 30 Jan 2014
Value US$278,500.00 | Price 5.57 | Shares 50,000
Sale 30 Jan 2014
Value US$1,352,500.00 | Price 5.41 | Shares 250,000
Sale 30 Jan 2014
Value US$556,500.00 | Price 5.57 | Shares 100,000
Sale 29 Jan 2014
Value US$1,320,000.00 | Price 5.28 | Shares 250,000
Sale 27 Jan 2014
Value US$3,848,374.95 | Price 4.83 | Shares 796,765
Sale 23 Jan 2014
Value US$888,540.00 | Price 5.92 | Shares 150,000
Sale 22 Jan 2014
Value US$1,532,500.00 | Price 6.13 | Shares 250,000
Sale 17 Jan 2014
Value US$1,380,000.00 | Price 6.90 | Shares 200,000
Sale 17 Jan 2014
Value US$1,400,000.00 | Price 7.00 | Shares 200,000
Sale 17 Jan 2014
Value US$1,385,000.00 | Price 6.93 | Shares 200,000
Buy 7 Dec 2011
Value US$3,000.00 | Price 0.60 | Shares 5,000
Buy 7 Dec 2011
Value US$6,590.00 | Price 0.66 | Shares 10,000
Buy 20 Apr 2011
Value US$9,500.00 | Price 0.95 | Shares 10,000
Sale 22 Dec 2010
Value US$1,325,000.00 | Price 2.65 | Shares 500,000
Sale 19 Jul 2010
Value US$10,266.00 | Price 2.05 | Shares 5,000
Buy 9 Jul 2010
Value US$22,292.00 | Price 2.23 | Shares 10,000
Sale 30 Jun 2010
Value US$5,100,000.00 | Price 2.55 | Shares 2,000,000
Sale 31 Mar 2010
Value US$18,976.65 | Price 4.65 | Shares 4,081
Sale 26 Mar 2010
Value US$3,847,500.00 | Price 5.70 | Shares 675,000
Sale 26 Mar 2010
Value US$83,100.00 | Price 5.54 | Shares 15,000
Sale 26 Mar 2010
Value US$141,500.00 | Price 5.66 | Shares 25,000
Sale 23 Sep 2009
Value US$1,250,000.00 | Price 2.50 | Shares 500,000
Planned sale 2 Jul 2009
Value US$7,213.51 | Price 4.19 | Shares 1,723
Planned sale 30 Jun 2009
Value US$12,896.01 | Price 4.45 | Shares 2,900
Planned sale 26 Jun 2009
Value US$20,923.10 | Price 4.55 | Shares 4,600
Planned sale 24 Jun 2009
Value US$2,814.00 | Price 4.69 | Shares 600
Planned sale 22 Jun 2009
Value US$5,580.00 | Price 4.65 | Shares 1,200
Planned sale 18 Jun 2009
Value US$6,440.00 | Price 4.60 | Shares 1,400
Planned sale 16 Jun 2009
Value US$1,912.00 | Price 4.78 | Shares 400
Planned sale 12 Jun 2009
Value US$12,406.25 | Price 4.96 | Shares 2,500
Planned sale 10 Jun 2009
Value US$7,528.95 | Price 5.02 | Shares 1,500
Planned sale 8 Jun 2009
Value US$20,144.40 | Price 5.04 | Shares 4,000
Planned sale 4 Jun 2009
Value US$12,848.42 | Price 4.94 | Shares 2,600
Planned sale 2 Jun 2009
Value US$31,560.14 | Price 5.19 | Shares 6,084
Planned sale 29 May 2009
Value US$12,789.61 | Price 5.56 | Shares 2,300
Planned sale 8 May 2009
Value US$8,402.31 | Price 4.82 | Shares 1,743
Planned sale 6 May 2009
Value US$17,892.86 | Price 4.42 | Shares 4,051
Planned sale 4 May 2009
Value US$11,178.00 | Price 4.86 | Shares 2,300
Planned sale 30 Apr 2009
Value US$26,968.15 | Price 4.90 | Shares 5,500
Planned sale 28 Apr 2009
Value US$5,586.96 | Price 4.66 | Shares 1,200
Planned sale 24 Apr 2009
Value US$9,732.60 | Price 4.87 | Shares 2,000
Planned sale 22 Apr 2009
Value US$4,816.00 | Price 4.82 | Shares 1,000
Planned sale 20 Apr 2009
Value US$1,452.00 | Price 4.84 | Shares 300
Planned sale 16 Apr 2009
Value US$13,883.17 | Price 4.79 | Shares 2,900
Planned sale 14 Apr 2009
Value US$31,258.08 | Price 4.96 | Shares 6,300
Planned sale 7 Apr 2009
Value US$3,605.20 | Price 4.51 | Shares 800
Planned sale 3 Apr 2009
Value US$6,849.36 | Price 4.89 | Shares 1,400
Planned sale 1 Apr 2009
Value US$12,537.92 | Price 4.80 | Shares 2,610
Planned sale 30 Mar 2009
Value US$5,495.93 | Price 5.00 | Shares 1,100
Planned sale 27 Mar 2009
Value US$3,094.02 | Price 5.16 | Shares 600
Sale 26 Mar 2009
Value US$6,789.12 | Price 3.99 | Shares 1,700
Planned sale 24 Mar 2009
Value US$2,928.00 | Price 3.66 | Shares 800
Planned sale 20 Mar 2009
Value US$5,766.40 | Price 3.60 | Shares 1,600
Planned sale 18 Mar 2009
Value US$13,038.66 | Price 3.83 | Shares 3,400
Planned sale 16 Mar 2009
Value US$7,325.45 | Price 3.05 | Shares 2,401
Planned sale 11 Mar 2009
Value US$9,276.12 | Price 3.44 | Shares 2,700
Planned sale 9 Mar 2009
Value US$13,363.65 | Price 2.97 | Shares 4,500
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-11-21 2025-11-19 B Purchase
3.5
Kalin Katherine Bach
Non-Executive Director
99,769 +22.3%
52.35
US$1,712,447 		99,769 +22.3% 52.35 US$1,712,447
2025-06-13 2025-06-12 B Purchase
3.7
VAN NOSTRAND ROBERT L
Non-Executive Director
75,915 -46.6%
131.19
US$4,728,099 		75,915 -46.6% 131.19 US$4,728,099
2025-06-02 2025-05-30 B Purchase
2.4
Wasman Jane
Non-Executive Director
85,009 +38.1%
431.04
US$91,696 		85,009 +38.1% 431.04 US$91,696
2025-05-22 2025-05-22 B Purchase
3.5
Kalin Katherine Bach
Non-Executive Director
20,000 +95.2%
1.80
US$36,000 		20,000 +95.2% 1.80 US$36,000
2022-12-05 2022-12-05 S Sale
3.3
Stergiou Angelos M.

President and CEO

Executive Director
6,494 -3.9%
2.61
US$16,938 		6,494 -3.9% 2.61 US$16,938
2022-12-05 2022-12-05 S Sale
3.2
Burns John Thomas

Senior VP, Finance & CAO

Officer
1,159 -3.8%
2.59
US$3,002 		1,159 -3.8% 2.59 US$3,002
2022-12-05 2022-12-05 S Sale
3.3
WOOD BARBARA A

EVP, Gen. Counsel, Corp. Sec.

Officer
2,153 -3.7%
2.59
US$5,576 		2,153 -3.7% 2.59 US$5,576
2021-12-03 2021-12-02 S Sale
3.3
WOOD BARBARA A

EVP, Gen. Counsel, Corp. Sec.

Officer
847 -2.0%
6.25
US$5,298 		847 -2.0% 6.25 US$5,298
2021-12-03 2021-12-02 S Sale
3.3
Stergiou Angelos M.

President and CEO

Executive Director
2,120 -1.7%
6.25
US$13,252 		2,120 -1.7% 6.25 US$13,252
2021-12-03 2021-12-02 S Sale
3.2
Burns John Thomas

VP, Finance & Corp Controller

Officer
231 -1.3%
6.27
US$1,448 		231 -1.3% 6.27 US$1,448
2019-01-03 2018-12-31 S Sale
3.3
Stergiou Angelos M.

President and CEO

Executive Director
23,277 -5.2%
1.25
US$29,189 		23,277 -5.2% 1.25 US$29,189
2017-06-22 2017-06-20 S Sale
3.9
Nisi Rudolph
500 -3.3%
0.55
US$273 		500 -3.3% 0.55 US$273
2017-02-10 2017-02-08 S Sale Hudson Bay Capital Management LP Large shareholder
2,363,441 -53.7%
0.84
US$1,985,290 		2,363,441 -53.7% 0.84 US$1,985,290
2016-06-07 2016-06-01 S Sale
3.4
Dunlap Ryan

Former Chief Financial Officer

Officer
126,875 -87.2%
2.18
US$276,588 		126,875 -87.2% 2.18 US$276,588
2014-02-13 2014-02-12 S Sale
3.7
Chin Richard
Non-Executive Director
187,500 -100.0%
4.33
US$812,438 		187,500 -100.0% 4.33 US$812,438
2014-02-13 2014-02-07 B Purchase Nisi Rudolph Non-Executive Director
20,000 +571.4%
4.94
US$98,742 		20,000 +571.4% 4.94 US$98,742
2014-02-05 2014-02-03 S Sale
3.2
GALLIKER STEPHEN S
Non-Executive Director
300,000 -96.8%
4.18
US$1,253,040 		300,000 -96.8% 4.18 US$1,253,040
2014-02-03 2014-01-30 S Sale
3.7
Chin Richard
Non-Executive Director
25,000 -100.0%
5.61
US$140,255 		25,000 -100.0% 5.61 US$140,255
2014-02-03 2014-01-30 S Sale
3.7
Chin Richard
Non-Executive Director
50,000 -66.7%
5.57
US$278,500 		50,000 -66.7% 5.57 US$278,500
2014-01-31 2014-01-30 S Sale
3.7
Hillsberg Sanford
Non-Executive Director
250,000 -93.3%
5.41
US$1,352,500 		250,000 -93.3% 5.41 US$1,352,500
2014-01-31 2014-01-30 S Sale SCHWARTZ MARK W.

EVP & Chief Operating Officer

Officer
100,000 -19.6%
5.57
US$556,500 		100,000 -19.6% 5.57 US$556,500
2014-01-31 2014-01-29 S Sale
3.9
Nisi Rudolph
Non-Executive Director
250,000 -98.6%
5.28
US$1,320,000 		250,000 -98.6% 5.28 US$1,320,000
2014-01-29 2014-01-27 S Sale
3.3
Ahn Mark J

President & CEO

Executive Director
796,765 -87.5%
4.83
US$3,848,375 		796,765 -87.5% 4.83 US$3,848,375
2014-04-09 2014-01-23 S Sale KRIEGSMAN STEVEN A Non-Executive Director
150,000 -96.8%
5.92
US$888,540 		150,000 -96.8% 5.92 US$888,540
2014-01-22 2014-01-22 S Sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
250,000 -98.0%
6.13
US$1,532,500 		250,000 -98.0% 6.13 US$1,532,500
2014-01-22 2014-01-17 S Sale
3.9
Nisi Rudolph
Non-Executive Director
200,000 -98.3%
6.90
US$1,380,000 		200,000 -98.3% 6.90 US$1,380,000
2014-01-22 2014-01-17 S Sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
200,000 -97.6%
7.00
US$1,400,000 		200,000 -97.6% 7.00 US$1,400,000
2014-01-22 2014-01-17 S Sale
3.7
Hillsberg Sanford
Non-Executive Director
200,000 -64.4%
6.93
US$1,385,000 		200,000 -64.4% 6.93 US$1,385,000
2011-12-07 2011-12-07 B Purchase Lee Kwang

Principal Accounting Officer

Officer
5,000 +inf%
0.60
US$3,000 		5,000 +inf% 0.60 US$3,000
2011-12-07 2011-12-07 B Purchase
3.3
Ahn Mark J

President & CEO

Executive Director
10,000 +100.0%
0.66
US$6,590 		10,000 +100.0% 0.66 US$6,590
2011-04-20 2011-04-20 B Purchase
3.3
Ahn Mark J

President and CEO

Executive Director
10,000 +inf%
0.95
US$9,500 		10,000 +inf% 0.95 US$9,500
2010-12-23 2010-12-22 S Sale CYTRX CORP Large shareholder
500,000 -16.2%
2.65
US$1,325,000 		500,000 -16.2% 2.65 US$1,325,000
2010-07-21 2010-07-19 S Sale
Varanasi Ramani

VP Business Development

Officer
5,000 -47.4%
2.05
US$10,266 		5,000 -47.4% 2.05 US$10,266
2010-07-12 2010-07-09 B Purchase
Beerman Noah D

CEO and President

Executive Director
10,000 +184.9%
2.23
US$22,292 		10,000 +184.9% 2.23 US$22,292
2010-07-02 2010-06-30 S Sale CYTRX CORP Large shareholder
2,000,000 -39.3%
2.55
US$5,100,000 		2,000,000 -39.3% 2.55 US$5,100,000
2010-04-02 2010-03-31 S Sale Samarsky Dmitry

VP, Technology Development

Officer
4,081 -100.0%
4.65
US$18,977 		4,081 -100.0% 4.65 US$18,977
2010-07-02 2010-03-26 S Sale CYTRX CORP Large shareholder
675,000 -11.7%
5.70
US$3,847,500 		675,000 -11.7% 5.70 US$3,847,500
2010-03-30 2010-03-26 S Sale
3.2
GALLIKER STEPHEN S
Non-Executive Director
15,000 -60.0%
5.54
US$83,100 		15,000 -60.0% 5.54 US$83,100
2010-03-30 2010-03-26 S Sale Hillsberg Sanford Non-Executive Director
25,000 -80.6%
5.66
US$141,500 		25,000 -80.6% 5.66 US$141,500
2009-09-25 2009-09-23 S Sale CYTRX CORP Large shareholder
500,000 -8.0%
2.50
US$1,250,000 		500,000 -8.0% 2.50 US$1,250,000
2009-07-06 2009-07-02 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,723 -16.1%
4.19
US$7,214 		1,723 -16.1% 4.19 US$7,214
2009-07-01 2009-06-30 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,900 -19.6%
4.45
US$12,896 		2,900 -19.6% 4.45 US$12,896
2009-06-29 2009-06-26 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
4,600 -21.7%
4.55
US$20,923 		4,600 -21.7% 4.55 US$20,923
2009-06-25 2009-06-24 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
600 -2.6%
4.69
US$2,814 		600 -2.6% 4.69 US$2,814
2009-06-23 2009-06-22 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,200 -4.8%
4.65
US$5,580 		1,200 -4.8% 4.65 US$5,580
2009-06-19 2009-06-18 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,400 -5.0%
4.60
US$6,440 		1,400 -5.0% 4.60 US$6,440
2009-06-17 2009-06-16 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
400 -1.3%
4.78
US$1,912 		400 -1.3% 4.78 US$1,912
2009-06-15 2009-06-12 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,500 -7.5%
4.96
US$12,406 		2,500 -7.5% 4.96 US$12,406
2009-06-11 2009-06-10 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,500 -4.2%
5.02
US$7,529 		1,500 -4.2% 5.02 US$7,529
2009-06-09 2009-06-08 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
4,000 -9.2%
5.04
US$20,144 		4,000 -9.2% 5.04 US$20,144
2009-06-05 2009-06-04 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,600 -5.5%
4.94
US$12,848 		2,600 -5.5% 4.94 US$12,848
2009-06-03 2009-06-02 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
6,084 -10.9%
5.19
US$31,560 		6,084 -10.9% 5.19 US$31,560
2009-06-01 2009-05-29 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,300 -3.5%
5.56
US$12,790 		2,300 -3.5% 5.56 US$12,790
2009-05-11 2009-05-08 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
1,743 -2.4%
4.82
US$8,402 		1,743 -2.4% 4.82 US$8,402
2009-05-07 2009-05-06 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
4,051 -5.0%
4.42
US$17,893 		4,051 -5.0% 4.42 US$17,893
2009-05-05 2009-05-04 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,300 -2.6%
4.86
US$11,178 		2,300 -2.6% 4.86 US$11,178
2009-05-01 2009-04-30 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
5,500 -5.6%
4.90
US$26,968 		5,500 -5.6% 4.90 US$26,968
2009-04-29 2009-04-28 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,200 -1.2%
4.66
US$5,587 		1,200 -1.2% 4.66 US$5,587
2009-04-27 2009-04-24 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,000 -1.9%
4.87
US$9,733 		2,000 -1.9% 4.87 US$9,733
2009-04-23 2009-04-22 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
1,000 -0.9%
4.82
US$4,816 		1,000 -0.9% 4.82 US$4,816
2009-04-21 2009-04-20 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
300 -0.3%
4.84
US$1,452 		300 -0.3% 4.84 US$1,452
2009-04-17 2009-04-16 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
2,900 -2.5%
4.79
US$13,883 		2,900 -2.5% 4.79 US$13,883
2009-04-15 2009-04-14 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
6,300 -5.0%
4.96
US$31,258 		6,300 -5.0% 4.96 US$31,258
2009-04-08 2009-04-07 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
800 -0.6%
4.51
US$3,605 		800 -0.6% 4.51 US$3,605
2009-04-06 2009-04-03 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,400 -1.0%
4.89
US$6,849 		1,400 -1.0% 4.89 US$6,849
2009-04-02 2009-04-01 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,610 -1.9%
4.80
US$12,538 		2,610 -1.9% 4.80 US$12,538
2009-03-31 2009-03-30 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
1,100 -0.7%
5.00
US$5,496 		1,100 -0.7% 5.00 US$5,496
2009-03-31 2009-03-27 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
600 -0.4%
5.16
US$3,094 		600 -0.4% 5.16 US$3,094
2009-03-27 2009-03-26 S Sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,700 -1.1%
3.99
US$6,789 		1,700 -1.1% 3.99 US$6,789
2009-03-25 2009-03-24 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
800 -0.5%
3.66
US$2,928 		800 -0.5% 3.66 US$2,928
2009-03-23 2009-03-20 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
1,600 -1.0%
3.60
US$5,766 		1,600 -1.0% 3.60 US$5,766
2009-03-19 2009-03-18 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
3,400 -2.0%
3.83
US$13,039 		3,400 -2.0% 3.83 US$13,039
2009-03-16 2009-03-16 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,401 -1.4%
3.05
US$7,325 		2,401 -1.4% 3.05 US$7,325
2009-03-12 2009-03-11 PlS Planned sale
3.7
KRIEGSMAN STEVEN A
Non-Executive Director
2,700 -1.5%
3.44
US$9,276 		2,700 -1.5% 3.44 US$9,276
2009-03-10 2009-03-09 PlS Planned sale KRIEGSMAN STEVEN A Non-Executive Director
4,500 -2.4%
2.97
US$13,364 		4,500 -2.4% 2.97 US$13,364
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