47 filings
UPLOAD
Aspen Technology Inc
28 Mar 22
Letter from SEC
12:00am
CORRESP
Aspen Technology Inc
18 Mar 22
Correspondence with SEC
12:00am
UPLOAD
Aspen Technology Inc
8 Mar 22
Letter from SEC
12:00am
UPLOAD
Aspen Technology Inc
15 Apr 20
Letter from SEC
12:00am
CORRESP
Aspen Technology Inc
3 Apr 20
Correspondence with SEC
12:00am
UPLOAD
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26 Mar 20
Letter from SEC
12:00am
CORRESP
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13 Mar 20
Correspondence with SEC
12:00am
UPLOAD
paaqfjqv4tf0swe1a
3 Mar 20
Letter from SEC
12:00am
UPLOAD
pccm9d52gh5xd5b
12 May 15
Letter from SEC
12:00am
CORRESP
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3 Apr 15
Correspondence with SEC
12:00am
UPLOAD
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20 Mar 15
Letter from SEC
12:00am
UPLOAD
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1 Apr 13
Letter from SEC
12:00am
CORRESP
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18 Mar 13
Correspondence with SEC
12:00am
UPLOAD
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8 Mar 13
Letter from SEC
12:00am
UPLOAD
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13 Jan 12
Letter from SEC
12:00am
CORRESP
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5 Jan 12
Correspondence with SEC
12:00am
UPLOAD
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20 Dec 11
Letter from SEC
12:00am
CORRESP
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14 Dec 11
Correspondence with SEC
12:00am
UPLOAD
mvi96u1x
30 Nov 11
Letter from SEC
12:00am
EFFECT
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22 Sep 10
Notice of effectiveness
12:00am